:the tube line up is:12sk7,12sk7,12sq7,50l6,12sa7.
::the tube line up is:12sk7,12sk7,12sq7,50l6,12sa7.
:
:
Hi Smith,
Interesting tube line up. Shouldn't there be a 35Z5GT somewhere? Is there an empty socket?
You will need a 35Z5GT or a Selenium rectifier. Selenium rectifiers are square and have fins. I think it unlikely.
Look at the Maguire 6L on this site. I think it will look familiar.
Alternately a 12SK7 was placed in the socket that needs the 35Z5GT.
All the Best,
Bill Grimm
And.....Bill is correct. That set employs a selenium rectifier.
:
:And.....Bill is correct. That set employs a selenium rectifier.
:thanks for all your help.doug.smith@roadrunner.com
:dennis thanks for your help.the radio sounds great.i need another print now.montgomey wards model 4br-720a,i repaired the radio with out it,but i need the dial string schematic.thanks for your help.
:dennis thanks for your help.the radio sounds great.i need another print now.montgomey wards model 4br-720a,i repaired the radio with out it,but i need the dial string schematic.thanks for your help.
::dennis thanks for your help.the radio sounds great.i need another print now.montgomey wards model 4br-720a,i repaired the radio with out it,but i need the dial string schematic.thanks for your help.
:
:
Could it be a 14BR-729A?
Check this:
http://www.nostalgiaair.org/PagesByModel/995/M0010995.pdf
All the Best,
Bill
:::dennis thanks for your help.the radio sounds great.i need another print now.montgomey wards model 4br-720a,i repaired the radio with out it,but i need the dial string schematic.thanks for your help.
::
::
:Could it be a 14BR-729A?
:Check this:
:http://www.nostalgiaair.org/PagesByModel/995/M0010995.pdf
:
:All the Best,
:
:Bill
:no it is a 4br-720a,
Otherwise, you are the onliest one who has the set, and I usually can figure out and draw up a path IF I have a close up photo / or hand drawing of all of its its mechanical constituents layouts
|
::::information sent
::::dennis thanks for your help.the radio sounds great.i need another print now.montgomey wards model 4br-720a,i repaired the radio with out it,but i need the dial string schematic.thanks for your help.
:::
:::
::Could it be a 14BR-729A?
::Check this:
::http://www.nostalgiaair.org/PagesByModel/995/M0010995.pdf
::
::All the Best,
::
::Bill
::no it is a 4br-720a,
:
:
: : : :  : : : : : : : :Sir Smith. . . . . : : :No chance that unit is not using a variable tuning condenser and using slide inductor tuning instead ? : : :Initially make a look see with this info and confirm if at least one of the given stringing routes of years past Airline models are also being compatible with your sets stringing. : : :INDEX and relevant sheets: : : : : :> > > < < < : : : : :> > > < < < : : : : :> > > < < < : : : : :Otherwise, you are the onliest one who has the set, and I usually can figure out and draw up a path IF I have a close up photo / or hand drawing of all of its its mechanical constituents layouts : : : : : : : :73's de Edd : : : : : : : : : :  : |
:
:
:
:
:
:
:
:::::information sent
:
:
:
:
:
:::::dennis thanks for your help.the radio sounds great.i need another print now.montgomey wards model 4br-720a,i repaired the radio with out it,but i need the dial string schematic.thanks for your help.
::::
::::
:
:
:
:::Could it be a 14BR-729A?
:::Check this:
:::http://www.nostalgiaair.org/PagesByModel/995/M0010995.pdf
:::
:::All the Best,
:::
:::Bill
:
:
:
:
:
:::no it is a 4br-720a,
::
:edd,the item #49,is the closest to correct.but the pulley with the spring has a double pulley side by side
:
::
:: :: :: :: :: :: :: :: :: :: :: ::Sir Smith. . . . . :: :: ::No chance that unit is not using a variable tuning condenser and using slide inductor tuning instead ? :: :: ::Initially make a look see with this info and confirm if at least one of the given stringing routes of years past Airline models are also being compatible with your sets stringing. :: :: ::INDEX and relevant sheets: :: :: :: :: ::> > > < < < :: :: :: :: ::> > > < < < :: :: :: :: ::> > > < < < :: :: :: :: ::Otherwise, you are the onliest one who has the set, and I usually can figure out and draw up a path IF I have a close up photo / or hand drawing of all of its its mechanical constituents layouts :: :: :: :: :: :: :: ::73's de Edd :: :: :: :: :: :: :: :: :: :: :: |
::
::
::
::
::
::
::
::::::information sent
::
::
::
::
::
::::::dennis thanks for your help.the radio sounds great.i need another print now.montgomey wards model 4br-720a,i repaired the radio with out it,but i need the dial string schematic.thanks for your help.
:::::
:::::
::
::
::
::::Could it be a 14BR-729A?
::::Check this:
::::http://www.nostalgiaair.org/PagesByModel/995/M0010995.pdf
::::
::::All the Best,
::::
::::Bill
::
::
::
::
::
::::no it is a 4br-720a,
:::
::edd,the item #49,is the closest to correct.but the pulley with the spring has a double pulley side by side
::edd the #45 also with double pulley
:
:
was there . . . remnants of an old stringing's cord so you could confirm if one pulley was associated with the mere driving of the dial pointer . . . . while the other pulley is being related solely to the coupling of the tuning knob shaft to its dedicated tuning condenser drum ?
|
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::Sir Smith. . . . .
:::
:::
:::No chance that unit is not using a variable tuning condenser and using slide inductor tuning instead ?
:::
:::
:::Initially make a look see with this info and confirm if at least one of the given stringing routes of years past Airline models are also being compatible with your sets stringing.
:::
:::
:::INDEX and relevant sheets:
:::
:::
:::
:::
:::> > > < < <
:::
:::
:::
:::
:::> > > < < <
:::
:::
:::
:::
:::> > > < < <
:::
:::
:::
:::
:::Otherwise, you are the onliest one who has the set, and I usually can figure out and draw up a path IF I have a close up photo / or hand drawing of all of its its mechanical constituents layouts
:::
:::
:::
:::
:::
:::
:::
:::73's de Edd
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::
:::::::information sent
:::
:::
:::
:::
:::
:::::::dennis thanks for your help.the radio sounds great.i need another print now.montgomey wards model 4br-720a,i repaired the radio with out it,but i need the dial string schematic.thanks for your help.
::::::
::::::
:::
:::
:::
:::::Could it be a 14BR-729A?
:::::Check this:
:::::http://www.nostalgiaair.org/PagesByModel/995/M0010995.pdf
:::::
:::::All the Best,
:::::
:::::Bill
:::
:::
:::
:::
:::
:::::no it is a 4br-720a,
::::
:::edd,the item #49,is the closest to correct.but the pulley with the spring has a double pulley side by side
:::edd the #45 also with double pulley
::
::
:
:
:
:
: : : : : : : : : : : :Sir Smith. . . . . : : :Soooooooo . . . if the unit uses two tandem pulleys clustered together at the end of the tuning condenser, are they of the same diameter or is one smaller than the other. : : :In your referencing to #45 . . . .it is probably the closest the assumed basic stringing . . . .but the 49 drawing is just just giving much finer detail of the dial pointer driving drum/pulleys manner of stringing. : : :Consulting Figure # 24 gives a more precise insight into that arrangement, with them using two different diameter units. : : :With the difference being, that the shown configuration is using a FRONTAL facing tuning condenser shaft, whereas your set seems to be using a SIDE facing tuning condenser shaft, with its additional need therein, of the utilization of 2 corner /directional shifting / idler pulleys to route the cord around. : : :Basically I percieve the stringing of one pulley just to move the dial pointer across the dial scale. : : :Then, the other pulley would be used to solely couple into the tuning knobs shaft. : : :Now, might I get some mechanical particulars: : : :In facing the tuning condenser end shaft, would it require a CW or CCW rotation to fully mesh the tuning condenser ? : : :From the dial pointer aspect if it is at its far right position , is it reading ~ 1700 Khz ? : : :Or is that unit having a "backwards" dial scale layout, with 550 being at the far right position ? : : :Are those dial drums of separate diameters, or not very likely, possibly being of the same diameters ? : : :If of two diameters which size is physically closest to the tuning condenser :Is there/? : : was there . . . remnants of an old stringing's cord so you could confirm if one pulley was associated with the mere driving of the dial pointer . . . . while the other pulley is being related solely to the coupling of the tuning knob shaft to its dedicated tuning condenser drum ? : : :I actually visualize that as being the situation. : : :If the unit was naked of any dial cord, measure a half circumference of each drum and see which one agrees the closest with the lateral dial scale span that the dial pointer has to be driven to its R and L limits. : : :Gone for the weekend . . . .fill me in in the interim. : : : : : : :73's de Edd : : : : : : : : : |
:
:
:
::::
::::
:::: :::: :::: :::: :::: :::: :::: :::: :::: :::: :::: ::::Sir Smith. . . . . :::: :::: ::::No chance that unit is not using a variable tuning condenser and using slide inductor tuning instead ? :::: :::: ::::Initially make a look see with this info and confirm if at least one of the given stringing routes of years past Airline models are also being compatible with your sets stringing. :::: :::: ::::INDEX and relevant sheets: :::: :::: :::: :::: ::::> > > < < < :::: :::: :::: :::: ::::> > > < < < :::: :::: :::: :::: ::::> > > < < < :::: :::: :::: :::: ::::Otherwise, you are the onliest one who has the set, and I usually can figure out and draw up a path IF I have a close up photo / or hand drawing of all of its its mechanical constituents layouts :::: :::: :::: :::: :::: :::: :::: ::::73's de Edd :::: :::: :::: :::: :::: :::: :::: :::: :::: :::: :::: |
::::
::::
::::
::::
::::
::::
::::
::::::::information sent
::::
::::
::::
::::
::::
::::::::dennis thanks for your help.the radio sounds great.i need another print now.montgomey wards model 4br-720a,i repaired the radio with out it,but i need the dial string schematic.thanks for your help.
:::::::
:::::::
::::
::::
::::
::::::Could it be a 14BR-729A?
::::::Check this:
::::::http://www.nostalgiaair.org/PagesByModel/995/M0010995.pdf
::::::
::::::All the Best,
::::::
::::::Bill
::::
::::
::::
::::
::::
::::::no it is a 4br-720a,
:::::
::::edd,the item #49,is the closest to correct.but the pulley with the spring has a double pulley side by side
::::edd the #45 also with double pulley
:::
:::the two pullies are the same size,tuning shaft in front with other knobs,dial far right is 550,no old string and no springs.thanks for your help and patience.
::
::
:
:
|
::
::
::
::
::
::
::
::
::
::
::
::
::
::
::Sir Smith. . . . .
::
::
::Soooooooo . . . if the unit uses two tandem pulleys clustered together at the end of the tuning condenser, are they of the same diameter or is one smaller than the other.
::
::
::In your referencing to #45 . . . .it is probably the closest the assumed basic stringing . . . .but the 49 drawing is just just giving much finer detail of the dial pointer driving drum/pulleys manner of stringing.
::
::
::Consulting Figure # 24 gives a more precise insight into that arrangement, with them using two different diameter units.
::
::
::With the difference being, that the shown configuration is using a FRONTAL facing tuning condenser shaft, whereas your set seems to be using a SIDE facing tuning condenser shaft, with its additional need therein, of the utilization of 2 corner /directional shifting / idler pulleys to route the cord around.
::
::
::Basically I percieve the stringing of one pulley just to move the dial pointer across the dial scale.
::
::
::Then, the other pulley would be used to solely couple into the tuning knobs shaft.
::
::
::Now, might I get some mechanical particulars:
::
::
::In facing the tuning condenser end shaft, would it require a CW or CCW rotation to fully mesh the tuning condenser ?
::
::
::From the dial pointer aspect if it is at its far right position , is it reading ~ 1700 Khz ?
::
::
::Or is that unit having a "backwards" dial scale layout, with 550 being at the far right position ?
::
::
::Are those dial drums of separate diameters, or not very likely, possibly being of the same diameters ?
::
::
::If of two diameters which size is physically closest to the tuning condenser
::Is there/?
::
:: was there . . . remnants of an old stringing's cord so you could confirm if one pulley was associated with the mere driving of the dial pointer . . . . while the other pulley is being related solely to the coupling of the tuning knob shaft to its dedicated tuning condenser drum ?
::
::
::I actually visualize that as being the situation.
::
::
::If the unit was naked of any dial cord, measure a half circumference of each drum and see which one agrees the closest with the lateral dial scale span that the dial pointer has to be driven to its R and L limits.
::
::
::Gone for the weekend . . . .fill me in in the interim.
::
::
::
::
::
::
::73's de Edd
::
::
::
::
::
::
::
::
::
::
::
::
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::Sir Smith. . . . .
:::::
:::::
:::::No chance that unit is not using a variable tuning condenser and using slide inductor tuning instead ?
:::::
:::::
:::::Initially make a look see with this info and confirm if at least one of the given stringing routes of years past Airline models are also being compatible with your sets stringing.
:::::
:::::
:::::INDEX and relevant sheets:
:::::
:::::
:::::
:::::
:::::> > > < < <
:::::
:::::
:::::
:::::
:::::> > > < < <
:::::
:::::
:::::
:::::
:::::> > > < < <
:::::
:::::
:::::
:::::
:::::Otherwise, you are the onliest one who has the set, and I usually can figure out and draw up a path IF I have a close up photo / or hand drawing of all of its its mechanical constituents layouts
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::73's de Edd
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::
:::::::::information sent
:::::
:::::
:::::
:::::
:::::
:::::::::dennis thanks for your help.the radio sounds great.i need another print now.montgomey wards model 4br-720a,i repaired the radio with out it,but i need the dial string schematic.thanks for your help.
::::::::
::::::::
:::::
:::::
:::::
:::::::Could it be a 14BR-729A?
:::::::Check this:
:::::::http://www.nostalgiaair.org/PagesByModel/995/M0010995.pdf
:::::::
:::::::All the Best,
:::::::
:::::::Bill
:::::
:::::
:::::
:::::
:::::
:::::::no it is a 4br-720a,
::::::
:::::edd,the item #49,is the closest to correct.but the pulley with the spring has a double pulley side by side
:::::edd the #45 also with double pulley
::::
::::the two pullies are the same size,tuning shaft in front with other knobs,dial far right is 550,no old string and no springs.thanks for your help and patience.
:::
:::
::
::
:
:
:
: :thanks edd ,you hit it right on the money.i am glad you guys are around for us newbies : : : : : : : : : :Sir Smith. . . . . : : :Soooooo . . . your unit is having the "backwards" Dial logging scale, with the 550 being at the right end of the dial scale. : : :You didn't inform as to whether the tuning condenser is fully meshed if being turned fully clockwise, but I will just throw in a preliminary sketch using that consideration. : : :With two identical sized drums, see if the two F and J guide pulleys don't seem to align up with routing the dial cord path onto the drum closest to the tuning condenser proper. : : :That would then leave the outermost pulley to be solely associated with being strung to merely be coupling that pulley to the frontal tuning knob shaft. : : :PLUS need to look at the area between that drum and the tuning knob shaft, since, if the tuning condenser shaft is end shooting, seems like the additional need of two pulleys also associated with accomplishing that 90 degree directional transition. That, of course, being akin to the like treatment used between the dial scale and its pulley. : : :Unless I have missed a mechanical aspect due to insufficient detailed info, try a trial in getting just the dial scale stringing done and rotate the drum by hand to test it out. : : :Start at BLUE A and then sequentially end up at RED O. : : :Cheap kite string could be used initially, so as to save real dial cord, and if snugged up and tied off to P one can usually test with out a tensioning spring. : : :Get this first pulley strung up correctly, and then the tuning knob shaft to the outer pulley can be figured out. : : :As mentioned, I really additionally needed the positions of the open gaps in the pulleys , with the tuning condenser fully meshed . . . . here I randomly assigned them to the "12 -o-clock " position. :Also . . . . I'm assuming that the tuning condenser is being max meshed at its max cw rotation of its shaft from its end view. : : :Also the pulley is shown frontally for more detail, rather than its actual 90 degree offset from the dialscale. : : :Also, I staggered the F and J idler pulleys mechanical positions for clarity of the sketch , also confirm if I put the dial scale pointer H-I on the proper transverse of the cord. : : : : :  : : :Awaiting further mechanical details . . . . : : : : : : :73's de Edd : : : : : : : : : |
:
:
:
:
:
:::
:::
:::
::: ::: ::: ::: ::: ::: ::: ::: ::: ::: ::: :::Sir Smith. . . . . ::: ::: :::Soooooooo . . . if the unit uses two tandem pulleys clustered together at the end of the tuning condenser, are they of the same diameter or is one smaller than the other. ::: ::: :::In your referencing to #45 . . . .it is probably the closest the assumed basic stringing . . . .but the 49 drawing is just just giving much finer detail of the dial pointer driving drum/pulleys manner of stringing. ::: ::: :::Consulting Figure # 24 gives a more precise insight into that arrangement, with them using two different diameter units. ::: ::: :::With the difference being, that the shown configuration is using a FRONTAL facing tuning condenser shaft, whereas your set seems to be using a SIDE facing tuning condenser shaft, with its additional need therein, of the utilization of 2 corner /directional shifting / idler pulleys to route the cord around. ::: ::: :::Basically I percieve the stringing of one pulley just to move the dial pointer across the dial scale. ::: ::: :::Then, the other pulley would be used to solely couple into the tuning knobs shaft. ::: ::: :::Now, might I get some mechanical particulars: ::: ::: :::In facing the tuning condenser end shaft, would it require a CW or CCW rotation to fully mesh the tuning condenser ? ::: ::: :::From the dial pointer aspect if it is at its far right position , is it reading ~ 1700 Khz ? ::: ::: :::Or is that unit having a "backwards" dial scale layout, with 550 being at the far right position ? ::: ::: :::Are those dial drums of separate diameters, or not very likely, possibly being of the same diameters ? ::: ::: :::If of two diameters which size is physically closest to the tuning condenser :::Is there/? ::: ::: was there . . . remnants of an old stringing's cord so you could confirm if one pulley was associated with the mere driving of the dial pointer . . . . while the other pulley is being related solely to the coupling of the tuning knob shaft to its dedicated tuning condenser drum ? ::: ::: :::I actually visualize that as being the situation. ::: ::: :::If the unit was naked of any dial cord, measure a half circumference of each drum and see which one agrees the closest with the lateral dial scale span that the dial pointer has to be driven to its R and L limits. ::: ::: :::Gone for the weekend . . . .fill me in in the interim. ::: ::: ::: ::: ::: ::: :::73's de Edd ::: ::: ::: ::: ::: ::: ::: ::: ::: |
:::
:::
:::
::::::
::::::
:::::: :::::: :::::: :::::: :::::: :::::: :::::: :::::: :::::: :::::: :::::: ::::::Sir Smith. . . . . :::::: :::::: ::::::No chance that unit is not using a variable tuning condenser and using slide inductor tuning instead ? :::::: :::::: ::::::Initially make a look see with this info and confirm if at least one of the given stringing routes of years past Airline models are also being compatible with your sets stringing. :::::: :::::: ::::::INDEX and relevant sheets: :::::: :::::: :::::: :::::: ::::::> > > < < < :::::: :::::: :::::: :::::: ::::::> > > < < < :::::: :::::: :::::: :::::: ::::::> > > < < < :::::: :::::: :::::: :::::: ::::::Otherwise, you are the onliest one who has the set, and I usually can figure out and draw up a path IF I have a close up photo / or hand drawing of all of its its mechanical constituents layouts :::::: :::::: :::::: :::::: :::::: :::::: :::::: ::::::73's de Edd :::::: :::::: :::::: :::::: :::::: :::::: :::::: :::::: :::::: :::::: :::::: |
::::::
::::::
::::::
::::::
::::::
::::::
::::::
::::::::::information sent
::::::
::::::
::::::
::::::
::::::
::::::::::dennis thanks for your help.the radio sounds great.i need another print now.montgomey wards model 4br-720a,i repaired the radio with out it,but i need the dial string schematic.thanks for your help.
:::::::::
:::::::::
::::::
::::::
::::::
::::::::Could it be a 14BR-729A?
::::::::Check this:
::::::::http://www.nostalgiaair.org/PagesByModel/995/M0010995.pdf
::::::::
::::::::All the Best,
::::::::
::::::::Bill
::::::
::::::
::::::
::::::
::::::
::::::::no it is a 4br-720a,
:::::::
::::::edd,the item #49,is the closest to correct.but the pulley with the spring has a double pulley side by side
::::::edd the #45 also with double pulley
:::::
:::::the two pullies are the same size,tuning shaft in front with other knobs,dial far right is 550,no old string and no springs.thanks for your help and patience.
::::
::::
:::
:::
::
::
:
:
(When you rotate the tuning knob clockwise . . . to the right . . . does the dial pointer move in that same direction ? ) . . . . . if so . . . " You did good " . . . a la . . .Dandy Don Meredith.
|
::
::
::
::thanks edd ,you hit it right on the money.i am glad you guys are around for us newbies
::
::
::
::
::
::
::
::
::
::Sir Smith. . . . .
::
::
::Soooooo . . . your unit is having the "backwards" Dial logging scale, with the 550 being at the right end of the dial scale.
::
::
::You didn't inform as to whether the tuning condenser is fully meshed if being turned fully clockwise, but I will just throw in a preliminary sketch using that consideration.
::
::
::With two identical sized drums, see if the two F and J guide pulleys don't seem to align up with routing the dial cord path onto the drum closest to the tuning condenser proper.
::
::
::That would then leave the outermost pulley to be solely associated with being strung to merely be coupling that pulley to the frontal tuning knob shaft.
::
::
::PLUS need to look at the area between that drum and the tuning knob shaft, since, if the tuning condenser shaft is end shooting, seems like the additional need of two pulleys also associated with accomplishing that 90 degree directional transition. That, of course, being akin to the like treatment used between the dial scale and its pulley.
::
::
::Unless I have missed a mechanical aspect due to insufficient detailed info, try a trial in getting just the dial scale stringing done and rotate the drum by hand to test it out.
::
::
::Start at BLUE A and then sequentially end up at RED O.
::
::
::Cheap kite string could be used initially, so as to save real dial cord, and if snugged up and tied off to P one can usually test with out a tensioning spring.
::
::
::Get this first pulley strung up correctly, and then the tuning knob shaft to the outer pulley can be figured out.
::
::
::As mentioned, I really additionally needed the positions of the open gaps in the pulleys , with the tuning condenser fully meshed . . . . here I randomly assigned them to the "12 -o-clock " position.
::Also . . . . I'm assuming that the tuning condenser is being max meshed at its max cw rotation of its shaft from its end view.
::
::
::Also the pulley is shown frontally for more detail, rather than its actual 90 degree offset from the dialscale.
::
::
::Also, I staggered the F and J idler pulleys mechanical positions for clarity of the sketch , also confirm if I put the dial scale pointer H-I on the proper transverse of the cord.
::
::
::
::
::
::
::
::Awaiting further mechanical details . . . .
::
::
::
::
::
::
::73's de Edd
::
::
::
::
::
::
::
::
::
::
::
::
::
::
::::
::::
::::
::::
::::
::::
::::
::::
::::
::::
::::
::::
::::
::::
::::Sir Smith. . . . .
::::
::::
::::Soooooooo . . . if the unit uses two tandem pulleys clustered together at the end of the tuning condenser, are they of the same diameter or is one smaller than the other.
::::
::::
::::In your referencing to #45 . . . .it is probably the closest the assumed basic stringing . . . .but the 49 drawing is just just giving much finer detail of the dial pointer driving drum/pulleys manner of stringing.
::::
::::
::::Consulting Figure # 24 gives a more precise insight into that arrangement, with them using two different diameter units.
::::
::::
::::With the difference being, that the shown configuration is using a FRONTAL facing tuning condenser shaft, whereas your set seems to be using a SIDE facing tuning condenser shaft, with its additional need therein, of the utilization of 2 corner /directional shifting / idler pulleys to route the cord around.
::::
::::
::::Basically I percieve the stringing of one pulley just to move the dial pointer across the dial scale.
::::
::::
::::Then, the other pulley would be used to solely couple into the tuning knobs shaft.
::::
::::
::::Now, might I get some mechanical particulars:
::::
::::
::::In facing the tuning condenser end shaft, would it require a CW or CCW rotation to fully mesh the tuning condenser ?
::::
::::
::::From the dial pointer aspect if it is at its far right position , is it reading ~ 1700 Khz ?
::::
::::
::::Or is that unit having a "backwards" dial scale layout, with 550 being at the far right position ?
::::
::::
::::Are those dial drums of separate diameters, or not very likely, possibly being of the same diameters ?
::::
::::
::::If of two diameters which size is physically closest to the tuning condenser
::::Is there/?
::::
:::: was there . . . remnants of an old stringing's cord so you could confirm if one pulley was associated with the mere driving of the dial pointer . . . . while the other pulley is being related solely to the coupling of the tuning knob shaft to its dedicated tuning condenser drum ?
::::
::::
::::I actually visualize that as being the situation.
::::
::::
::::If the unit was naked of any dial cord, measure a half circumference of each drum and see which one agrees the closest with the lateral dial scale span that the dial pointer has to be driven to its R and L limits.
::::
::::
::::Gone for the weekend . . . .fill me in in the interim.
::::
::::
::::
::::
::::
::::
::::73's de Edd
::::
::::
::::
::::
::::
::::
::::
::::
::::
::::
::::
::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::Sir Smith. . . . .
:::::::
:::::::
:::::::No chance that unit is not using a variable tuning condenser and using slide inductor tuning instead ?
:::::::
:::::::
:::::::Initially make a look see with this info and confirm if at least one of the given stringing routes of years past Airline models are also being compatible with your sets stringing.
:::::::
:::::::
:::::::INDEX and relevant sheets:
:::::::
:::::::
:::::::
:::::::
:::::::> > > < < <
:::::::
:::::::
:::::::
:::::::
:::::::> > > < < <
:::::::
:::::::
:::::::
:::::::
:::::::> > > < < <
:::::::
:::::::
:::::::
:::::::
:::::::Otherwise, you are the onliest one who has the set, and I usually can figure out and draw up a path IF I have a close up photo / or hand drawing of all of its its mechanical constituents layouts
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::73's de Edd
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::::::information sent
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::::::dennis thanks for your help.the radio sounds great.i need another print now.montgomey wards model 4br-720a,i repaired the radio with out it,but i need the dial string schematic.thanks for your help.
::::::::::
::::::::::
:::::::
:::::::
:::::::
:::::::::Could it be a 14BR-729A?
:::::::::Check this:
:::::::::http://www.nostalgiaair.org/PagesByModel/995/M0010995.pdf
:::::::::
:::::::::All the Best,
:::::::::
:::::::::Bill
:::::::
:::::::
:::::::
:::::::
:::::::
:::::::::no it is a 4br-720a,
::::::::
:::::::edd,the item #49,is the closest to correct.but the pulley with the spring has a double pulley side by side
:::::::edd the #45 also with double pulley
::::::
::::::the two pullies are the same size,tuning shaft in front with other knobs,dial far right is 550,no old string and no springs.thanks for your help and patience.
:::::
:::::
::::
::::
:::
:::
::
::
:
:
:
:
: :yes,the dial pointer is moving to the right,that is 550 on my dial . : : : : : : : : : :Sir Smith. . . . . : : :Could I be so lucky as to merely having to provide onliest that initial info, with you being so astute and hyper observant as to " figgerlate " out the rest of the second drum stringing interfacing into the tuning knobs shaft. : : :You numbah one smart cookie ! : : :BTW . . . . one final query . . . . a la Clint Eastwood-esque . . . : : :" I gots to knows" . . . . . . . . : :(When you rotate the tuning knob clockwise . . . to the right . . . does the dial pointer move in that same direction ? ) . . . . . if so . . . " You did good " . . . a la . . .Dandy Don Meredith. : : : : :73's de Edd : : : :I had to give up jogging for my healths sake, my thighs kept rubbing together and setting my underwear on fire. : : : : : |
:
:
:
:
:
:
:::
:::
::: :::thanks edd ,you hit it right on the money.i am glad you guys are around for us newbies ::: ::: ::: ::: ::: ::: ::: ::: ::: :::Sir Smith. . . . . ::: ::: :::Soooooo . . . your unit is having the "backwards" Dial logging scale, with the 550 being at the right end of the dial scale. ::: ::: :::You didn't inform as to whether the tuning condenser is fully meshed if being turned fully clockwise, but I will just throw in a preliminary sketch using that consideration. ::: ::: :::With two identical sized drums, see if the two F and J guide pulleys don't seem to align up with routing the dial cord path onto the drum closest to the tuning condenser proper. ::: ::: :::That would then leave the outermost pulley to be solely associated with being strung to merely be coupling that pulley to the frontal tuning knob shaft. ::: ::: :::PLUS need to look at the area between that drum and the tuning knob shaft, since, if the tuning condenser shaft is end shooting, seems like the additional need of two pulleys also associated with accomplishing that 90 degree directional transition. That, of course, being akin to the like treatment used between the dial scale and its pulley. ::: ::: :::Unless I have missed a mechanical aspect due to insufficient detailed info, try a trial in getting just the dial scale stringing done and rotate the drum by hand to test it out. ::: ::: :::Start at BLUE A and then sequentially end up at RED O. ::: ::: :::Cheap kite string could be used initially, so as to save real dial cord, and if snugged up and tied off to P one can usually test with out a tensioning spring. ::: ::: :::Get this first pulley strung up correctly, and then the tuning knob shaft to the outer pulley can be figured out. ::: ::: :::As mentioned, I really additionally needed the positions of the open gaps in the pulleys , with the tuning condenser fully meshed . . . . here I randomly assigned them to the "12 -o-clock " position. :::Also . . . . I'm assuming that the tuning condenser is being max meshed at its max cw rotation of its shaft from its end view. ::: ::: :::Also the pulley is shown frontally for more detail, rather than its actual 90 degree offset from the dialscale. ::: ::: :::Also, I staggered the F and J idler pulleys mechanical positions for clarity of the sketch , also confirm if I put the dial scale pointer H-I on the proper transverse of the cord. ::: ::: ::: ::: ::: ::: ::: :::Awaiting further mechanical details . . . . ::: ::: ::: ::: ::: ::: :::73's de Edd ::: ::: ::: ::: ::: ::: ::: ::: ::: |
:::
:::
:::
:::
:::
:::::
:::::
:::::
::::: ::::: ::::: ::::: ::::: ::::: ::::: ::::: ::::: ::::: ::::: :::::Sir Smith. . . . . ::::: ::::: :::::Soooooooo . . . if the unit uses two tandem pulleys clustered together at the end of the tuning condenser, are they of the same diameter or is one smaller than the other. ::::: ::::: :::::In your referencing to #45 . . . .it is probably the closest the assumed basic stringing . . . .but the 49 drawing is just just giving much finer detail of the dial pointer driving drum/pulleys manner of stringing. ::::: ::::: :::::Consulting Figure # 24 gives a more precise insight into that arrangement, with them using two different diameter units. ::::: ::::: :::::With the difference being, that the shown configuration is using a FRONTAL facing tuning condenser shaft, whereas your set seems to be using a SIDE facing tuning condenser shaft, with its additional need therein, of the utilization of 2 corner /directional shifting / idler pulleys to route the cord around. ::::: ::::: :::::Basically I percieve the stringing of one pulley just to move the dial pointer across the dial scale. ::::: ::::: :::::Then, the other pulley would be used to solely couple into the tuning knobs shaft. ::::: ::::: :::::Now, might I get some mechanical particulars: ::::: ::::: :::::In facing the tuning condenser end shaft, would it require a CW or CCW rotation to fully mesh the tuning condenser ? ::::: ::::: :::::From the dial pointer aspect if it is at its far right position , is it reading ~ 1700 Khz ? ::::: ::::: :::::Or is that unit having a "backwards" dial scale layout, with 550 being at the far right position ? ::::: ::::: :::::Are those dial drums of separate diameters, or not very likely, possibly being of the same diameters ? ::::: ::::: :::::If of two diameters which size is physically closest to the tuning condenser :::::Is there/? ::::: ::::: was there . . . remnants of an old stringing's cord so you could confirm if one pulley was associated with the mere driving of the dial pointer . . . . while the other pulley is being related solely to the coupling of the tuning knob shaft to its dedicated tuning condenser drum ? ::::: ::::: :::::I actually visualize that as being the situation. ::::: ::::: :::::If the unit was naked of any dial cord, measure a half circumference of each drum and see which one agrees the closest with the lateral dial scale span that the dial pointer has to be driven to its R and L limits. ::::: ::::: :::::Gone for the weekend . . . .fill me in in the interim. ::::: ::::: ::::: ::::: ::::: ::::: :::::73's de Edd ::::: ::::: ::::: ::::: ::::: ::::: ::::: ::::: ::::: |
:::::
:::::
:::::
::::::::
::::::::
:::::::: :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: ::::::::Sir Smith. . . . . :::::::: :::::::: ::::::::No chance that unit is not using a variable tuning condenser and using slide inductor tuning instead ? :::::::: :::::::: ::::::::Initially make a look see with this info and confirm if at least one of the given stringing routes of years past Airline models are also being compatible with your sets stringing. :::::::: :::::::: ::::::::INDEX and relevant sheets: :::::::: :::::::: :::::::: :::::::: ::::::::> > > < < < :::::::: :::::::: :::::::: :::::::: ::::::::> > > < < < :::::::: :::::::: :::::::: :::::::: ::::::::> > > < < < :::::::: :::::::: :::::::: :::::::: ::::::::Otherwise, you are the onliest one who has the set, and I usually can figure out and draw up a path IF I have a close up photo / or hand drawing of all of its its mechanical constituents layouts :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: ::::::::73's de Edd :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: :::::::: |
::::::::
::::::::
::::::::
::::::::
::::::::
::::::::
::::::::
::::::::::::information sent
::::::::
::::::::
::::::::
::::::::
::::::::
::::::::::::dennis thanks for your help.the radio sounds great.i need another print now.montgomey wards model 4br-720a,i repaired the radio with out it,but i need the dial string schematic.thanks for your help.
:::::::::::
:::::::::::
::::::::
::::::::
::::::::
::::::::::Could it be a 14BR-729A?
::::::::::Check this:
::::::::::http://www.nostalgiaair.org/PagesByModel/995/M0010995.pdf
::::::::::
::::::::::All the Best,
::::::::::
::::::::::Bill
::::::::
::::::::
::::::::
::::::::
::::::::
::::::::::no it is a 4br-720a,
:::::::::
::::::::edd,the item #49,is the closest to correct.but the pulley with the spring has a double pulley side by side
::::::::edd the #45 also with double pulley
:::::::
:::::::the two pullies are the same size,tuning shaft in front with other knobs,dial far right is 550,no old string and no springs.thanks for your help and patience.
::::::
::::::
:::::
:::::
::::
::::
:::
:::
::
::
:
: