Crosley 27 -Revisited

10/12/2013 7:21:56 AMDave Froehlich

Hello All,
I started working on this radio in 2007 and then it got put into storage. I had removed one of the RF transformers because it was open. I need to know what transformer will work as a replacement. The one that's missing is identical to the one that's still there. Maybe someone has a little more service data for the Model 27, as well. In the schematic:

http://www.nostalgiaair.org/Resources/421/M0043421.htm

both transformers have the same part number.

Thanks,

Dave

10/12/2013 7:38:18 AMDave Froehlich

Hello Again,
There is a part number on the schematic for this coil:
71W 22678. Maybe that will help find one.

Thanks,

Dave
:Hello All,
: I started working on this radio in 2007 and then it got put into storage. I had removed one of the RF transformers because it was open. I need to know what transformer will work as a replacement. The one that's missing is identical to the one that's still there. Maybe someone has a little more service data for the Model 27, as well. In the schematic:
:
:http://www.nostalgiaair.org/Resources/421/M0043421.htm
:
:both transformers have the same part number.
:
:Thanks,
:
:Dave
:

10/12/2013 10:58:59 AMNorm Leal

Dave

The 3 RF coils should match for proper tracking.

PTOP has coils.

http://www.oldradioparts.com/pg2a6.htm

Norm

:Hello Again,
: There is a part number on the schematic for this coil:
:71W 22678. Maybe that will help find one.
:
:Thanks,
:
:Dave
::Hello All,
:: I started working on this radio in 2007 and then it got put into storage. I had removed one of the RF transformers because it was open. I need to know what transformer will work as a replacement. The one that's missing is identical to the one that's still there. Maybe someone has a little more service data for the Model 27, as well. In the schematic:
::
::http://www.nostalgiaair.org/Resources/421/M0043421.htm
::
::both transformers have the same part number.
::
::Thanks,
::
::Dave
::
:
:

10/12/2013 12:28:45 PMDave Froehlich

Norm,
I have searched that page. I have no idea which of those is a good match. Is there a cross reference from Crosley to Meisner? Please help.

Thanks,

Dave
:Dave
:
: The 3 RF coils should match for proper tracking.
:
: PTOP has coils.
:
:http://www.oldradioparts.com/pg2a6.htm
:
:Norm
:
::Hello Again,
:: There is a part number on the schematic for this coil:
::71W 22678. Maybe that will help find one.
::
::Thanks,
::
::Dave
:::Hello All,
::: I started working on this radio in 2007 and then it got put into storage. I had removed one of the RF transformers because it was open. I need to know what transformer will work as a replacement. The one that's missing is identical to the one that's still there. Maybe someone has a little more service data for the Model 27, as well. In the schematic:
:::
:::http://www.nostalgiaair.org/Resources/421/M0043421.htm
:::
:::both transformers have the same part number.
:::
:::Thanks,
:::
:::Dave
:::
::
::
:
:

10/12/2013 2:57:44 PMDave Froehlich

Norm,
This radio has an antenna coil and two RF coils. I don't see a third one. It's not on the schematic. Another similar model (that there's a diagram of in Riders on a page near the 28 (aka. 27)) has 3 but this one has the two 71W 22678 RF transformers.
I just checked the input and output transformers on the amplifier and they're both open. There is no connection from B+ to any connection on the input transformer (T7 71W-22933 on the schematic). The output transformer is a part of that old style speaker. I plan on using a more modern speaker, so I'm going to need to find the right one at PTOP too. But which one, I have no idea. But I can figure out out put transformers easier than I input transformers or RF transformers.

Thanks,

Dave

:Dave
:
: The 3 RF coils should match for proper tracking.
:
: PTOP has coils.
:
:http://www.oldradioparts.com/pg2a6.htm
:
:Norm
:
::Hello Again,
:: There is a part number on the schematic for this coil:
::71W 22678. Maybe that will help find one.
::
::Thanks,
::
::Dave
:::Hello All,
::: I started working on this radio in 2007 and then it got put into storage. I had removed one of the RF transformers because it was open. I need to know what transformer will work as a replacement. The one that's missing is identical to the one that's still there. Maybe someone has a little more service data for the Model 27, as well. In the schematic:
:::
:::http://www.nostalgiaair.org/Resources/421/M0043421.htm
:::
:::both transformers have the same part number.
:::
:::Thanks,
:::
:::Dave
:::
::
::
:
:

10/12/2013 8:36:48 PMNorm Leal

Dave

Since this is a one dial radio with three tuned circuits they should all track together. Your antenna coil and two RF coils should have the same tuned sections.

You could try a coil designed for broadcast band. Could also change all three as a matched set. Think I would try a couple coils designed for broadcast first. Should be something close.

Might call Gary at PTOP. He has a good idea what he has in stock.

Norm

:Norm,
: This radio has an antenna coil and two RF coils. I don't see a third one. It's not on the schematic. Another similar model (that there's a diagram of in Riders on a page near the 28 (aka. 27)) has 3 but this one has the two 71W 22678 RF transformers.
: I just checked the input and output transformers on the amplifier and they're both open. There is no connection from B+ to any connection on the input transformer (T7 71W-22933 on the schematic). The output transformer is a part of that old style speaker. I plan on using a more modern speaker, so I'm going to need to find the right one at PTOP too. But which one, I have no idea. But I can figure out out put transformers easier than I input transformers or RF transformers.
:
:Thanks,
:
:Dave
:
::Dave
::
:: The 3 RF coils should match for proper tracking.
::
:: PTOP has coils.
::
::http://www.oldradioparts.com/pg2a6.htm
::
::Norm
::
:::Hello Again,
::: There is a part number on the schematic for this coil:
:::71W 22678. Maybe that will help find one.
:::
:::Thanks,
:::
:::Dave
::::Hello All,
:::: I started working on this radio in 2007 and then it got put into storage. I had removed one of the RF transformers because it was open. I need to know what transformer will work as a replacement. The one that's missing is identical to the one that's still there. Maybe someone has a little more service data for the Model 27, as well. In the schematic:
::::
::::http://www.nostalgiaair.org/Resources/421/M0043421.htm
::::
::::both transformers have the same part number.
::::
::::Thanks,
::::
::::Dave
::::
:::
:::
::
::
:

10/13/2013 7:04:51 PMDave Froehlich

Norm,
I found a Meissner catalog online, where I see that the coils are (were) available with and without the can (shield). So it doesn't matter if I misplaced the can. They cost so little on PTOP, I'll order a bunch.
The other problems are the input and output transformers for Push-Pull 31s. I won't be able to hear the tuner if the amplifier isn't working. So I need a little help with those transformers, as well. They are also open.
Gary has something on his website like "don't ask me to help you find a part". So I'm not sure he will help. So please help if you can.

Thanks very much,

Dave

:Dave
:
: Since this is a one dial radio with three tuned circuits they should all track together. Your antenna coil and two RF coils should have the same tuned sections.
:
: You could try a coil designed for broadcast band. Could also change all three as a matched set. Think I would try a couple coils designed for broadcast first. Should be something close.
:
: Might call Gary at PTOP. He has a good idea what he has in stock.
:
:Norm
:
:
::Norm,
:: This radio has an antenna coil and two RF coils. I don't see a third one. It's not on the schematic. Another similar model (that there's a diagram of in Riders on a page near the 28 (aka. 27)) has 3 but this one has the two 71W 22678 RF transformers.
:: I just checked the input and output transformers on the amplifier and they're both open. There is no connection from B+ to any connection on the input transformer (T7 71W-22933 on the schematic). The output transformer is a part of that old style speaker. I plan on using a more modern speaker, so I'm going to need to find the right one at PTOP too. But which one, I have no idea. But I can figure out out put transformers easier than I input transformers or RF transformers.
::
::Thanks,
::
::Dave
::
:::Dave
:::
::: The 3 RF coils should match for proper tracking.
:::
::: PTOP has coils.
:::
:::http://www.oldradioparts.com/pg2a6.htm
:::
:::Norm
:::
::::Hello Again,
:::: There is a part number on the schematic for this coil:
::::71W 22678. Maybe that will help find one.
::::
::::Thanks,
::::
::::Dave
:::::Hello All,
::::: I started working on this radio in 2007 and then it got put into storage. I had removed one of the RF transformers because it was open. I need to know what transformer will work as a replacement. The one that's missing is identical to the one that's still there. Maybe someone has a little more service data for the Model 27, as well. In the schematic:
:::::
:::::http://www.nostalgiaair.org/Resources/421/M0043421.htm
:::::
:::::both transformers have the same part number.
:::::
:::::Thanks,
:::::
:::::Dave
:::::
::::
::::
:::
:::
::
:
:

10/13/2013 9:00:47 PMRichard

: Gary has something on his website like "don't ask me to help you find a part". So I'm not sure he will help. So please help if you can.

Dave,

I always have taken that to mean don't ask me to go out looking for parts for you that I don't have. Rather than don't ask me if I have something.

Richard

10/14/2013 6:54:31 AMDave Froehlich

Richard,
Yes, I do ask if something listed is in stock. But he does't help pick out something, or answer a design or technical question, like we discuss in this forum. Anyway, I like PTOP. The next thing I need to know is which input transformer will replace the one in the Crosley 27. The output transformer needs to match the 10K ohms to 4 or 8 ohms. It should also be designed to work with the .8 watt output. Once the amplifier is working, I will be able to hear the tuner.

Thanks,

Dave
:: Gary has something on his website like "don't ask me to help you find a part". So I'm not sure he will help. So please help if you can.
:
:Dave,
:
:I always have taken that to mean don't ask me to go out looking for parts for you that I don't have. Rather than don't ask me if I have something.
:
:Richard
:

10/14/2013 10:16:38 AMNorm Leal

Dave

Use a transformer similar to Stancor A53C. Both AES and Radio Daze has these. PTOP should also. Look for an audio interstage transformer with ratio 1:3 or around that.

Norm

:Richard,
: Yes, I do ask if something listed is in stock. But he does't help pick out something, or answer a design or technical question, like we discuss in this forum. Anyway, I like PTOP. The next thing I need to know is which input transformer will replace the one in the Crosley 27. The output transformer needs to match the 10K ohms to 4 or 8 ohms. It should also be designed to work with the .8 watt output. Once the amplifier is working, I will be able to hear the tuner.
:
:Thanks,
:
:Dave
::: Gary has something on his website like "don't ask me to help you find a part". So I'm not sure he will help. So please help if you can.
::
::Dave,
::
::I always have taken that to mean don't ask me to go out looking for parts for you that I don't have. Rather than don't ask me if I have something.
::
::Richard
::
:
:

10/15/2013 11:20:32 AMDave Froehlich

Norm,
OK, I found all the transformers except the output transformer. I have searched and searched but there doesn't seem to be low power, even a universal model that has the 10K ohms and Push Pull to voice coil for battery tube sets. The lowest power I can find is in a Stancor catalog.
I found an unknown on the PTOP website but that's for a single plate 3V4. Is there one I missed? I believe it's an 8 inch 1 watt speaker. I need to replace that too. Maybe PTOP has a speaker with the transformer on it that will work.

Thanks very much,

Dave
:Dave
:
: Use a transformer similar to Stancor A53C. Both AES and Radio Daze has these. PTOP should also. Look for an audio interstage transformer with ratio 1:3 or around that.
:
:Norm
:
::Richard,
:: Yes, I do ask if something listed is in stock. But he does't help pick out something, or answer a design or technical question, like we discuss in this forum. Anyway, I like PTOP. The next thing I need to know is which input transformer will replace the one in the Crosley 27. The output transformer needs to match the 10K ohms to 4 or 8 ohms. It should also be designed to work with the .8 watt output. Once the amplifier is working, I will be able to hear the tuner.
::
::Thanks,
::
::Dave
:::: Gary has something on his website like "don't ask me to help you find a part". So I'm not sure he will help. So please help if you can.
:::
:::Dave,
:::
:::I always have taken that to mean don't ask me to go out looking for parts for you that I don't have. Rather than don't ask me if I have something.
:::
:::Richard
:::
::
::
:
:

10/15/2013 6:31:20 PMClifton

Is space to put the transformer the problem?

Clifton

:Norm,
: OK, I found all the transformers except the output transformer. I have searched and searched but there doesn't seem to be low power, even a universal model that has the 10K ohms and Push Pull to voice coil for battery tube sets. The lowest power I can find is in a Stancor catalog.
: I found an unknown on the PTOP website but that's for a single plate 3V4. Is there one I missed? I believe it's an 8 inch 1 watt speaker. I need to replace that too. Maybe PTOP has a speaker with the transformer on it that will work.
:
:Thanks very much,
:
:
:Dave
::Dave
::
:: Use a transformer similar to Stancor A53C. Both AES and Radio Daze has these. PTOP should also. Look for an audio interstage transformer with ratio 1:3 or around that.
::
::Norm
::
:::Richard,
::: Yes, I do ask if something listed is in stock. But he does't help pick out something, or answer a design or technical question, like we discuss in this forum. Anyway, I like PTOP. The next thing I need to know is which input transformer will replace the one in the Crosley 27. The output transformer needs to match the 10K ohms to 4 or 8 ohms. It should also be designed to work with the .8 watt output. Once the amplifier is working, I will be able to hear the tuner.
:::
:::Thanks,
:::
:::Dave
::::: Gary has something on his website like "don't ask me to help you find a part". So I'm not sure he will help. So please help if you can.
::::
::::Dave,
::::
::::I always have taken that to mean don't ask me to go out looking for parts for you that I don't have. Rather than don't ask me if I have something.
::::
::::Richard
::::
:::
:::
::
::
:
:

10/16/2013 1:50:10 PMDave Froehlich

Clifton,
There's plenty of space.

Dave
:Is space to put the transformer the problem?
:
:Clifton
:
::Norm,
:: OK, I found all the transformers except the output transformer. I have searched and searched but there doesn't seem to be low power, even a universal model that has the 10K ohms and Push Pull to voice coil for battery tube sets. The lowest power I can find is in a Stancor catalog.
:: I found an unknown on the PTOP website but that's for a single plate 3V4. Is there one I missed? I believe it's an 8 inch 1 watt speaker. I need to replace that too. Maybe PTOP has a speaker with the transformer on it that will work.
::
::Thanks very much,
::
::
::Dave
:::Dave
:::
::: Use a transformer similar to Stancor A53C. Both AES and Radio Daze has these. PTOP should also. Look for an audio interstage transformer with ratio 1:3 or around that.
:::
:::Norm
:::
::::Richard,
:::: Yes, I do ask if something listed is in stock. But he does't help pick out something, or answer a design or technical question, like we discuss in this forum. Anyway, I like PTOP. The next thing I need to know is which input transformer will replace the one in the Crosley 27. The output transformer needs to match the 10K ohms to 4 or 8 ohms. It should also be designed to work with the .8 watt output. Once the amplifier is working, I will be able to hear the tuner.
::::
::::Thanks,
::::
::::Dave
:::::: Gary has something on his website like "don't ask me to help you find a part". So I'm not sure he will help. So please help if you can.
:::::
:::::Dave,
:::::
:::::I always have taken that to mean don't ask me to go out looking for parts for you that I don't have. Rather than don't ask me if I have something.
:::::
:::::Richard
:::::
::::
::::
:::
:::
::
::
:
:

10/16/2013 4:21:18 PMClifton

Should be able to use a universal transformer up to about 5 watts rating. I don't think a radio cares so much if the power supply is batteries or an AC power.

Clifton

:Clifton,
: There's plenty of space.
:
:Dave
::Is space to put the transformer the problem?
::
::Clifton
::
:::Norm,
::: OK, I found all the transformers except the output transformer. I have searched and searched but there doesn't seem to be low power, even a universal model that has the 10K ohms and Push Pull to voice coil for battery tube sets. The lowest power I can find is in a Stancor catalog.
::: I found an unknown on the PTOP website but that's for a single plate 3V4. Is there one I missed? I believe it's an 8 inch 1 watt speaker. I need to replace that too. Maybe PTOP has a speaker with the transformer on it that will work.
:::
:::Thanks very much,
:::
:::
:::Dave
::::Dave
::::
:::: Use a transformer similar to Stancor A53C. Both AES and Radio Daze has these. PTOP should also. Look for an audio interstage transformer with ratio 1:3 or around that.
::::
::::Norm
::::
:::::Richard,
::::: Yes, I do ask if something listed is in stock. But he does't help pick out something, or answer a design or technical question, like we discuss in this forum. Anyway, I like PTOP. The next thing I need to know is which input transformer will replace the one in the Crosley 27. The output transformer needs to match the 10K ohms to 4 or 8 ohms. It should also be designed to work with the .8 watt output. Once the amplifier is working, I will be able to hear the tuner.
:::::
:::::Thanks,
:::::
:::::Dave
::::::: Gary has something on his website like "don't ask me to help you find a part". So I'm not sure he will help. So please help if you can.
::::::
::::::Dave,
::::::
::::::I always have taken that to mean don't ask me to go out looking for parts for you that I don't have. Rather than don't ask me if I have something.
::::::
::::::Richard
::::::
:::::
:::::
::::
::::
:::
:::
::
::
:
: