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I fixed the low power issue. It was down to the thick wire I had going from the Neg terminal of the power plug to the rear chassis bolt?? Anyway I removed this and power jumped back up. The audio is a

Another interesting one: 4. Discrete one-watt RMS audio amplifier | darrenyates.com.au/electronics | | | | | | | | | | | 4. Discrete one-watt RMS audio amplifier | darrenyates.com.au/electronics | | |

Diz has one on his site for historical reference. Maybe for topics like these. Discrete Audio Amplifier Kit | | | | Discrete Audio Amplifier Kit Discrete Audio Amplifier Kit | | | 73 Rahul VU3WJM

Please share your mods with us!

Carl, gently shake the toroids and see. Tap the relays with the handle end of a small screwdriver and check. Coil solder has been known to be occasionally bad. Relays also go bad.. Raj

Hello, this famous trx produce annoying chrash during rx/tx switching. I combined a simple agc curcuit together with muting system to get rid of any cracks. Is anyone interested ?

Daniel is right, I was tapping off the IF for the RTL dongle....? Unfortunately the radio is now only transmitting .5w too! Today I will test the finals although there is no point replacing them

check if your supply voltage is dropping on 'hellow'. - f

Perhaps local radtion due to left over mismatch. It might be wiser to shield loose wires to/from audio amp /agc by shielded wires and shield grounded on one side. Also the power reaching to raduino

Hi! I would like to know whether the behavior of TX frequency of uBitx at CWL and CWU mode I experienced is normal on CECFW v1.08. For instance, When there is the CQ station on?7.0100MHz on my ICOM

I've a tray full of Intersil TO-3 VN66s here dating from about 1980. Used some in 5 watt qrp amplifier, used to drive it from the Tx low-level stage of my Atlas 210X for QRP. de miken,? ?zl1bnb

I too have seen this. I have yet to sort mine out and usually for me happens on an antenna and not the dummy load. Brad

I was testing into a dummy load and noticed that when I whistled into the mike, or even spoke into it on higher frequencies, would cause the rig to react as if I had pressed the button on the encoder.

That's extremely interesting and informative, and completely contrary to what I'm trying to do. I like the answers about using the pot on the board to lower the output power. Excellent. I'll probably

Hello Arv Plastic cases on power supplies can be sprayed with conducting metal paint on the inside to stop RFI. Just be sure no high voltage parts touch the now metalized surface. 73 -- John VK6JAH

Thanks Allard, I will check that out. 73 -- John VK6JAH

Allison I think he's trying the SDR function of Ian's firmware? That taps off the IF to feed an SDR dongle.

"I have not lost my mind, its backed up around here somewhere." -- Lee - N9LO?"I Void Warranties"

Mike N4EEV Just old and remembering some of the solutions that worked in the past. I finally got my act together and now I can't remember where I put it! 8-) Arv K7HKL _._

This amp works very well, with very low distortion. http://darrenyates.com.au/electronics/archives/31 I have built this amp to verify, it but note the voltage range up to 12v. I found the final pair