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Is the input circuit around kt907 for impedance matching?
Decided to rework my amp project into a mono lowband AM transmitter with modified heising modulation with a toroidal transformer. I would rather use a grounded grid scheme for the gu-50.
Does anyone know what transistor would cross reference to the tr-9 transistor in a navaho trc-458? When I pulled the transistor handling it, I rubbed the numbers off by accident.
Thanks
Mainly 11 meters.
I have the power supply layout just fine. I have found simular schematics, some having additional tubes inline. Trying to see what kind of plate iron I can find for the project.
Thanks again
Well Instead of buying an amplifier like I originally was. I would like to build one instead.
I have this schematic, but would like some input on what the pi net componant values should be is there a formula for calculating this, mainly the L1 and L2 and C5 values? Also the reference material...
I have a TRC-458 that has no modulation on ssb or am, does have a carrier on am. Might just be the mic I tried on it... who knows! Also has intermittant receive, which looks like the mode switch just needs a good cleaning. Its In ok condition some rust on the back metal chassis. Everythings...
Looking for recommendations on an amplifier that can handle 80 watts of drive to go with a Yaesu FT-101EE. I would like somthing vintage, tube ofcourse.
This would only be used on ssb, dont really do AM on this rig.
Thanks
I have an SBE-34 coming in soon, got it for a great deal. Does anyone have any modifications for this transceiver?
1. Wanted to know what tubes I may be able to mod the final with? PL-509? 6146? Right now it should have pair of 6GB5 or pl500.
2. AGC modifications, the way the AGC is set up...
Ok, just ordered 150ft of rg-213 and a 3 ft jumper. I thought that veritical radiator was a load of malarkey too. Now to just decide on and antenna......
Overkill? What would you recommend as far as coax goes?
Rg-213 maby?
I have plenty of space avalable. 5 acres of nothing but trees!
I have to span a driveway from the peak of the roof to get to the wooded area( 30 to 40 feet). I wanted to get the antenna as high as possible thats what...
I am setting up a new station, so far I have gotten a nice Kenwood TS-520.
I am looking for an antenna that will cover mainly 80/40 meters or more without a tuner.
I am looking into feeding this with either BuryFlex or LMR-400 or ?.
The run will most likely be about 150ft.
I have been...
I thought the input impedance was 50k, the amplified version of the d-104 stand is matched from the hi-z element through the amp board to about 600ohms. Is the audio affected at all?
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