Recent Posts

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The Old Tractor Forum / Re: 1950 Massey Harris Pony
« Last post by Radio Tech on May 14, 2018, 08:57:07 PM »
The AC were good tractors. Cut my teeth on a B model when I was 7 years old.

Thanks

Working on putting a 3 point hitch on this one now.
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Ham Radio Circuits and Repair / HR2510
« Last post by kopcicle on May 12, 2018, 02:00:57 PM »
 PB-111AB , I need the X-ray of the mainboard , my manual didn't include it  :-/
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Ham Radio Circuits and Repair / Re: Old Knightkit 50 watt transmitter capacitors
« Last post by Radio Tech on May 11, 2018, 09:53:55 PM »
Sounds like a winner. Let us know how it goes.
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Ham Radio Circuits and Repair / Re: Old Knightkit 50 watt transmitter capacitors
« Last post by uplink7 on May 09, 2018, 05:35:29 PM »
Thanks for the info Buddy. Looks like Hayseed Hamfest might have what I need. They have a recap kit for the Knight T-60 that uses 700 volt caps. I'll check with them.
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Ham Radio Circuits and Repair / Re: Old Knightkit 50 watt transmitter capacitors
« Last post by Radio Tech on May 08, 2018, 06:13:18 PM »
Hi Bill and welcome.
I would need to research those capacitors. 700 volt caps are rare to find these days. Have you tried Hayseed hamfest?
They may have them.

When I need caps like that I put them in series and then put a piece of heat shrink around them making it look like one capacitor.
I have not seen a knight transmitter in so long I am not sure of how the inside looks.

Also thanks for watching the videos.

Buddy
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Ham Radio Circuits and Repair / Old Knightkit 50 watt transmitter capacitors
« Last post by uplink7 on May 08, 2018, 02:28:08 PM »
Hi guys, new to this forum but really enjoy the videos on YouTube. I am restoring an old Knightkit 50 watt transmitter and want to replace the 60 year old electrolytics in the power supply. They are 8 MFD 700 volt caps. I checked the Just Radios site that has been recommended on YT but they only have up to 600 V electrolytics. The manual says the Key Up voltage on the 5U4 Rectifier is 720 volts so I don't want to use use the 600 volt variety. I'd rather not put ones in series to increase the voltage rating say 2 350 V caps to make 700 V unless I have to.
Any suggestions on where I could get suitable replacements  or what I should use instead?

Bill
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Electronic Video Blog / This forum has greatly increased my knowledge.
« Last post by Nedofenaz on May 07, 2018, 03:20:20 AM »
The forum for this site made me realize a lot of things.
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The Old Tractor Forum / Re: 1950 Massey Harris Pony
« Last post by stp on April 24, 2018, 01:03:32 PM »
GOOD FIND I FIX WORK ON  ALLIS CHALMERS MOSTLY 175/180/185
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The Old Tractor Forum / Re: 1950 Massey Harris Pony
« Last post by Radio Tech on April 20, 2018, 01:12:55 PM »
Gave the tractor a bath today. Looks much better
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New member welcome / Re: Hello from the Pacific Northwest
« Last post by Catalinaz on April 19, 2018, 12:29:18 AM »
If you need more information and knowledge, please ask.
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