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Author Topic: Signal One fans out here?  (Read 1897 times)
KG9H
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« on: May 15, 2013, 05:08:20 AM »

I am working on a Signal One and am looking for a few spares.  Also, anyone wanting to trade notes on repair of these radios, send me an email at kg9hfrank@gmail.com
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W9GB
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« Reply #1 on: May 15, 2013, 01:15:26 PM »

K5OG has one of the more comprehensive web pages on Signal-One.
http://www.k5og.com/signal%20one.html

SignalOne Technical Notes
http://www.hamanuals.com/S1/Common/TNindex.html

Bill KA4GAV has a good Signal One web page
http://www.hamanuals.com/s1root.html

Part datasheets
http://www.hamanuals.com/S1/Common/Datashts.html

SignalOne owners registry
http://www.k5og.com/Registry%20Main%20Page.htm

SignalOne Parts
http://www.hamanuals.com/S1/CX7%20Sale%20stuff/Sale.htm
« Last Edit: May 15, 2013, 01:20:24 PM by W9GB » Logged
KD0REQ
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« Reply #2 on: May 15, 2013, 01:27:42 PM »

currently (that is, until several other things came up in the household) working on the +38V section of the infamous power supply.  going to have to go LM317T on it.

this has been a spare-time habit for a few years for me, and without the Signal/One disk from hamanuals.com and a spare transformer when Bill had parts chassis, it would not have been possible.

some of the spare 8072/4657 tubes I got from fleabay were as cheap as $7, so keep on looking.  I actually fell backwards into this rig, and back on ham radio, when there were three mint 4657s in a tube caddy cleanout auction I got for fixing some old 20s TRFs.

I could even spot you a tube if you need it and are ready for smoke test, email offline.  note, these are oxide-cathode tubes, on any of these old NOSs, you should pull plate and screen voltages, and cook 'em on filament only from a few hours to a day to be sure they are degassed.  I would recommend a fan on the heat sink for that cookdown, so it isn't a meltdown.  spare beryllium blocks are unobtainium, although you could machine new tube mount collars if you had to.
« Last Edit: May 15, 2013, 01:30:39 PM by KD0REQ » Logged
KG9H
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« Reply #3 on: May 16, 2013, 04:07:29 AM »

Guys,
Thank you for the quick response.  I am well on my way, chasing ghosts now for a few weeks, my radio is just about ready to box up and operate.  (Well... maybe just place on the operating position with the case off, hi hi...)  This weekend I will be going through the Paul Kollar Modifications to see what I have in mine as well as which ones I may want to do.  The radio is completely operational, and I also have snagged a 30 meter crystal and the 2 CW filters.  Although I am not going to Dayton, I will have an excellent weekend!  Will be listening on 7.275 this weekend from Antioch, IL  -73- Frank KG9H
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KG9H
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« Reply #4 on: May 17, 2013, 03:49:29 AM »

Scott, see vol3no6 for an alternative for the 317.  It uses a more robust solution. (At least in the eyes of the poster.)  I will have mine on the air this weekend  7.275 until 9am Saturday and Sunday.  Frank KG9H
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