I have finally completely finished restoring/ recapping, stripping, re-finishing.. etc etc... this beautiful old Gilfillan.

http://www.pbpix.com/gilfillan

I have not, however, ever been able to identify it properly. The closest I can figure out is that it seems to be schematicaly similar to the model 6X8 but it does not have the tuning eye as shown in the 6X8 print.

It is also very close to the 5S8 but not the power supply section ...which is like the 6X8.

So what have I got here?? .... and does it really matter?... well I think so.
... Especially if I want to try to sell it on Ebay one day... wouldn't it be better to really be able to specify the model number?

The only identifying marks I can find is a metal stamped number in the chassis # 501-26837
and... just the first 3 digits of a large red serial number stamped in a box-inset on the bottom part of the patent-#s license label = 127xxx

If any of you recognize this old beauty...great!!
... or if you can give me a lead to who ever kept a master list of all Gilfillan models.

(I also happen to own a Gilfillan 15F : ( now here I KNOW the model number but can't find a print or anything)

http://www.pbpix.com/gil-15f.jpg

...So the 15-F seems to be an "un-documented" model if that's possible??
... but it certainly would be very nice to find somebody whose hoarding all this "secret" model number info. )

any help would be appreciated.

Hi Peter

Some radio chassis were sold with & other without eye tube tuning. Your 6X8 chassis is probably correct.

Rider only printed the most polular schematics. If you are on the West coast, like me, you will find other Gilfilan radios not in Rider. What tubes are in Model 15? Maybe there is a similar radio?

Norm

:I have finally completely finished restoring/ recapping, stripping, re-finishing.. etc etc... this beautiful old Gilfillan.
:
:http://www.pbpix.com/gilfillan
:
:I have not, however, ever been able to identify it properly. The closest I can figure out is that it seems to be schematicaly similar to the model 6X8 but it does not have the tuning eye as shown in the 6X8 print.
:
:It is also very close to the 5S8 but not the power supply section ...which is like the 6X8.
:
:So what have I got here?? .... and does it really matter?... well I think so.
:... Especially if I want to try to sell it on Ebay one day... wouldn't it be better to really be able to specify the model number?
:
:The only identifying marks I can find is a metal stamped number in the chassis # 501-26837
:and... just the first 3 digits of a large red serial number stamped in a box-inset on the bottom part of the patent-#s license label = 127xxx
:
:If any of you recognize this old beauty...great!!
:... or if you can give me a lead to who ever kept a master list of all Gilfillan models.
:
:(I also happen to own a Gilfillan 15F : ( now here I KNOW the model number but can't find a print or anything)
:
:http://www.pbpix.com/gil-15f.jpg
:
:...So the 15-F seems to be an "un-documented" model if that's possible??
:... but it certainly would be very nice to find somebody whose hoarding all this "secret" model number info. )
:
:any help would be appreciated.
:
:

You might be right Norm.
... but then that's sort of the only difference between the 5S8 and the 6X8 yet those two's power supplies have the field coil a little different.
Un-like you Norm I'm in NJ... lol
..and until I began this hobby back last Sept. I had never heard of Gilfillan... now I love to collect them.. maybe that's part of the reason.
The 15-F looks, on the outside, EXACTLY like a 6L as seen below but the 6L has that 6th tube, a 12sk7 as an RF amp, and mine lacks that extra tube and only has the AA5 line up:
http://radioatticarchives.com/images/g/Gilfillan_6L_Rabbitt.jpg

Peter,

This is guess from the tube lineup using the MYE book. The model 515 has the same lineup less the eye tube. The schematic is small since the page is shared with 2 other schematics.

http://www.nostalgiaair.org/Resources/562/M0008562.htm

Richard

Peter,

I'm confused. After posting earlier realized the web page with your photos show a 6D6 tube labeled in the photo. The web page also mentions schematically similar to model 6S5 and 6X5 which have 78 tube instead of a 6D6.

Going with the 6D6 tube, the possiblities switch to 521T-C and 501T from the MYE book. Whew!

Richard

Rich:
You are 'the man'!!!!
Worth your weight in gold ....my friend.

YES... that's it!... it is the 501-T...
Everything compares exactly as I see it. The key was R1 & R11 the two 200 ohm cathode bias resistors for the 75 and the 6d6. Kind of strange to me.

They seem to form a resistor-divider puting the cathode of the 75 tube at 200 ohms above ground and the cathode of the 6D6 at 400 ohms above ground... but I don't understand why they connect together exactly? Do they need to sense anything from the other? Or is that just the way they chose to do it?

Anyway... I was looking so hard to find a match and you really dug up the exact model, thanks!
I started at the lowest number and just kept checking until I found the 6X8 which seemd so close.. and I used that schematic during restoration.
But I did keep looking up the list and for some reason I just never stumbled on this 501-T.
The 521-T seems to be the SW band version.
Anyway.. you put a really big 'rest-easy-now' smile on my face sir.
So whatever effort you put forth to locate it has been greatly appreciated.
And if I'm not mistaken... you've found others like this for me too... like the "AirMaster" (Simplex-D) remember?

I'm really glad to have Rich finally help me identify this 501T...
but now I feel so dumb because... you'd think that the big #501 stamped right into the metal chassis would have given me a clue!!...lol

Awww shucks...I'm blushing! Do remember the Airmasater to Simplex-D id posting.

A MYE book can be a big help especially knowing the manufacturer and tube lineup.

Richard

:Awww shucks...I'm blushing! Do remember the Airmasater to Simplex-D id posting.
:
:A MYE book can be a big help especially knowing the manufacturer and tube lineup.
:
:Richard

Is this MYE book available? I have several radios that I have not been able to i.d.
Thanks,
Jon.
:
:

Jon: They show up at radio/ham swapmeets and ebay. No longer in print. There is also a CD put out by RadioEra.com. that is pricey. Search using "mallory manual" should bring a hit with ebay/google. Right now there is one for TV not radio on ebay. MYE is short for Mallory Yaxley Encyclopedia. Look for the 5th or 6th radio edition. Earlier editions are nice to have too. The final 6th edition (1948) is actually titled "Mallory Radio Service Encyclopedia", no mention of Yaxley. They also had a Technical Manual that explained some odd subjects like vibrator power supplies and automatic tuning systems.

Richard