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OK Two different systems. Do not confuse grounding electrical with RF grounding. their is no need to ground your Delta loop to ground. let me dig up some links for ya

NO Their is a difference from DC ground and RF ground. Delta loop is suppose to be 1 wavelength on whatever band you are building it for. should present an impedance of roughly 100 ohm, depending on where your feed point is. So yes one side is connected to center of SO 239 other side is...

North Central Florida here, turkey buzzards use my GP for a roost, made from 1/2 EMT conduit, haven't bent a radial yet

Yes they are, I have ordered and received sb220 ps kit. glad to see them back.

HMMMM,, All modes have their use and place in the hobby. some more challenging and rewarding than others. I guess it is up to the individual to decide which one they prefer. Sort of like the rich guying buying a speedboat vs the working guy who builds his own boat. One put the time in for the...

572B not a very good tube for AM use tends to get hot. bias it with a zener or string of diodes to lower the idle current. I wouldn't use any more than 50 watts PEP for drive. Add additional cooling to move the heat . Watch over driving the grid, I think the grid resistors 32 ohm??? have a...

any update on the old heathkit??

https://pa0fri.home.xs4all.nl/Lineairs/SB200/sb200eng.htm many years ago I used this site and had a lot of fun doing the mods to an ols sb200,, I still have that same 200 with the cetron tubes in it full output..you will get the old sb200 up and running soon

RIP

I do not know about Ground efficiency on a ground plane if you install it a wave length AGL the type ground really has no bearing on a vertical 1/4 wl gp. I have around a dozen homebrew 1/4wl direct fed GP installed around North Florida and they seem to work as good as any other GP around...

ok and visually inspect the band selector switch for any corrosion , the input and output switch is a weak point on Heathkit amps, some de oxit and clean it with acid brush seems to clean contacts decent. the input and output circuit can be troubleshot by using an vtvm checking for...

door knob cap for 80 meters in the PIL output tank circuit, they get old and go out of tolerance. As you are looking down on the tank circuit should be on right hand side, there is also one for 40 meters. What is the input vswr on 80 meters??

Remembering back years ago ( may not be such a good thing as memory deters with age) I recall something about having to change a cap in the final section if not using the Japanese manufactured tubes for the 101. Causes loading issues and current draw issues as the American made tubes have...

WTF???

raining like crazy here in N Florida

Hey flattop, I cant remember what version I had been a few years,, Think I ended up putting VFO on it ( transmitter) and using it that way so I could read freq of the VFO and didn't use the dial on the old bird any more. the receiver has CB HF and XTAL positions.

Thanks for keeping us updated Jeff, prayers for Eddie and Family

Beetle , The favorite antenna was the "unicorn" antenna , mounted on the 11th deck with a 30 degree tilt forward over looking elevator 1 on forward part of flight deck, that thing screamed . Also like to use deck edge antennas but nothing came close to the "unicorn antenna". We heard the...

Thanks Jeff for update on Eddie, prayers

Little bit more information???? You want to keep in touch with the rest of the world?? As in SWL short wave listening to broadcast bands from around the world? Or you want to get involved in radio hobby for communications?? Your short term and long term goals are??? Just few answers and then...