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learnt a point Farhan jee. Regards MVS Sarma

from junction r111/r113 solder a 1n4148 diode direct to the 12volt rail (LM368 is now alltime connected with 12volt) 73 elmar-dl2qa Gesendet: Sonntag, 01. Juli 2018 um 14:15 Uhr Von: 4Z1NT

John, Don, others, Yesterday I attached a 78L05 (TO220) directly to the back of the AGC board that is mounted to the RF gain control on the front panel. Bypassed all power leads and ran a separate

When you say solder 1n4148 t0 +12v not RX, which one are we talking about?

Hello Derrick, here is more info. please look at the picture . hope it is visible. if you have any question --give me a shout. Gesendet: Sonntag, 01. Juli 2018 um 13:52 Uhr Von: "Derrick Young"

Don, I spent part of yesterday applying ferrites to this and that to little success. I also tried wrapping the 5v line around the twisted pair coming from the volume pot and that did some good. This

Yes, more info please.

The firmware is still the original for the ver. 3 Ubitx

I usually use a Softrock Ensemble as the receiver for the Ubitx and other rigs. The CW TX in the Ubitx is 700hz off the actual frequency. I believe it was done by purpose although I would have rather

I had a similar problem where w1aw at 10 over would fade out to the point where I could no longer copy them on cw. Worked fine with headphones plugged. Replaced the 2 inch speaker and ok now. 73 John

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Diz has one on his site for historical reference.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