Search results

Once I saw there was no current to the final I assumed it was bad. I will check the resistor to be sure. I have a few 2sc1969 transistors so if the resistor is good I will replace the transistor and get the bias set on both the driver and final.

Got my fuses. With the Meter set to 200 mA positive lead clipped to TP8 and negative lead inserted into the connector of the green wire leading to the 2SC1306 driver I'm reading 56mA When testing TP7 to the 2SC1969 final I am reading 0

Sorry was distracted by the cat and didn't thoroughly read your post. Base Voltages - TR 39 USB & LSB TX 0.67v TR 41 USB & LSB TX 0.84v Couldn't find any fuses locally. Should have them tomorrow. Thanks!

On LSB & USB TR 38 & TR 41 TX & RX are 13.73 R 38 is 8.29

TR39 2SC1306 RX 13.14 TX 5.98 TR41 2SC1969 RX 13.14 TX 5.37 Also checked TR38 2SC1973 RX 0 TX 8.33 re posted this as my shop cat laid on the keyboard and some how deleted the original.

Well I can't check current as the fuses in both of my DMMs are shot and I don't have any spares on hand. I will have to check and see if can find anywhere around here tomorrow that have them. Hate to be bothering you while you are working...

I should have been a little clearer on my reply. No hum/hiss in PA audio. And its not really a buzz it is more of low hum/hiss. Same level with onboard power supply and external power supply. I will check the current at TP7 and TP8 and post results

Well I had a bad microphone. I do Have PA Audio and audio out to the working radio although it has a buzz/hum

No audio from the PA. Just a buzz/hiss

Nothing on the watt meter. No audio to the working radio just a carrier with a buzz/hum.

You guys are awesome! I have realigned the synthesizer and carrier oscillator and everything is spot on. I still don't seem to have any receive. I key up a working radio and don't get anything on the 142. Just the static hiss. There is a little something going on when I key up the 142 on a...

Alright I'll leave it as is. Do I need to realign the synthesizer after changing the 10.240 MHz crystal?

10.239853 MHz is as close as I could get to 10.240000 MHz. Do I need to find a trimmer cap to get it dead on?

Thanks Guys! I have a handful of 10.240 crystals. Hopefully one of them is good. I'll get it swapped out.

Hope you are having a great Father's Day! I swapped counters and was able to get the Carrier Oscillator aligned on USB, LSB and AM with no drift. Seems the Agilent counter needs a little more signal to lock on. Glad I had a backup. Something learned. At least I'll know this going forward...

I changed the resistor to a 22k and I'm able to get the CH 19 LSB TX frequency to 34.982500 with plenty of adjustment on either side. (feel like DA putting a 22 ohm there!) Now.. When checking the divider input on CH1 I am getting 1.430153 to 1.430360 The Hz are drifting.. As I go up channels...

Geez! I guess that's what I get for working on this late night after working all day! Thanks for catching my mistake! I will get it changed out and post the results

Voltages for the diodes with clarifier centered D35 Anode: 8.28 Cathode: 7.37 D36 Anode: 0 Cathode: 7.37 D37 Anode: 0 Cathode: 7.37 Obviously something isn't right. Verified I put a 1n4148 diode back at D36 and a 22 Ohm resistor back at R187. Is it possible I reversed the wires coming off...

Yes the clarifier was centered when I took the voltage readings. It was modded but I removed it and put everything back to stock the best I could tell from the schematic. I put R187 back , D36 was put back, I pulled the choke off the Varactor D37 and soldered the cathode end back to the board...

Voltage on VR3 5.35 | 1.29 | 6.54 Actually got the counter cheap at an estate sale. No deep pockets here LOL