Search results

Does anyone know how one would go about calibrating this meter?

DIODE I found a small round gray diode that was bad but can't find any matching replacement. The numbers on the diode are: 256GI401. Any ideas?

Thanks you for your concern. The amp is fused and has a 3 prong power cord. Just want to get it working!

Hey Fellas, Does anyone have any info on this amp. I do not have any paperwork on it. It uses what looks like two 30KD6 tubes and they both light. The relays do not however energize when an rf signal is present. The relays are good. I checked all the diodes, transistors and caps and they seem...

I have good power on all bands except 160 meters. On 160 I have about 2 watts output? I have tried adjusting TC-28 & TC-10 and it did not change a thing. Any ideas what could be wrong? Thanks...

Does anyone know how to adjust the bandpass filter on the Yaesu 101E?

Sorry...now that the problem has been narrowed down to one specific thing I thought it would be more visible if I started a new thread.

Could someone please explain how to adjust the bandpass filter on this rig. My receive & trans is good on one side of the band but poor on the other. Thanks...

This appears to be the problem. Any idea on how to adjust the filter?

Thanks! Do you know what board those resistors would be on? The trans & receive are much better on one end of the dial than the other.

Thanks...was thinking the same. I get 13.8 volts and not 15 so I'm down 1.2volts. I'll check the caps.

Are there any techs here? I have this meter that reads both rms and pep. I have attached a schematic. In the rms mode the meter needle rest at the 0 mark as it should and works fine. When switching to the pep mode with no input signal present the needle rises and rest at the 5 watt point. When a...

OK thanks. Planning on replacing the finals when all said and done being that I have no idea how old they are and that the previous owner had GE tubes in it without changing the c125 to 10pf. The tubes are most likely on the weak side but it does not explain why the rig tunes well on the higher...

Ok - Between working the preselect and TC5 I have good power on all the ten meter bands a,b,c,d, but only on the higher frequencies on the VFO. As you turn the VFO dial in the opposite direction the power takes a dive and you can not adjust with the preselect.

This is AFTER retuning I'm seeing little to no power on 10A.

Thanks for the replies so far. I'm now hearing and reading that I never should have turned the 101-102-103 slugs. Meanwhile everyone was telling me to read the service manual and that's the first thing the manual says, is to adjust the slugs on the 10D band and go from there. I will check...

Boy do I have a headache! I am not an expert tech but have built many kits & I know how to read and use an VOM. I am using the Yaesu manual and trying to get the rig working like it should. When starting at band 10D as per the manual I can tune and get 60rms and 120 pep output on ssb on my watt...

Thanks for asking...I'm starting a new thrend!

Does not seem to be the tubes Thanks - had the manual. Obviously something needs adjustment. Where should I look next...ALC or TX adjustment?

Cleaned Band Selector I cleaned the band selector switches, especially in the trap coil area and got an increase in output. On 10m 40 watts rms from 8 and 140 rms from 80 on 80meters. Sounds like an alignment?