Recent content by EmptyPockets1013

I have a side mic 29 that was working awesome, I wanted to do the recieve boost mod to it. I installed the mod on a switch. I decided to make sure it was on frequency while it was on the bench. It was off a little so I adjusted it the close as it would go. I have a TIP120 variable installed so I...

I have it paired with a Texas Star DX350 low drive which is working well.

That’s what everyone says….. do that and look at the signal with an O-Scope, it has a very nasty clipped positive peak on this particular radio. I’m not doing a Golden screwdriver tune on my radio using proper test equipment you can actually see what the waveform does when adjusting the VR’s.

So I’m new to tuning radios and working on my own stuff. I have way more than enough equipment to do, o-scope,spectrum analyzer, RF communication tester (CMU200), and an Signal generator. I’m still trying to learn the tricks to tune some on my own radios which are the popular ones, particularly...

I haven’t checked the amc circuit, I’m not sure how to tell just by looking at it. I will have to look at the schematic, the modulation VR does do a little bit. That isn’t maxed though. The VR’s in the radio very scratchy when I adjust them so will probably have to replace them. As far as I can...

I guess I need to pull the capacitors on the input/output transformer and check the values on them.

I brought a Galaxy DX48T off of flea bay for a decent price a few months back, I just finally got around to checking in out. So I setup it up on my bench with an O scope and my R&S CMU200 communication tester, the radio is super dirty. The wave form is nasty looking, box car. The spectrum...

I replaced all 4 13N10 transistors with IRF520’s that seems to have took care of that problem. The other problem is there no volume or very low volume in AM,LSB,and USB modes. The volume and squelch is normal in FM. I saw that there an issue with dirty or bad connections on the wiring plugs. I...

I have a Stryker 955 that brought off of flea bay, that has very weak modulation. If I hook up to the oscilloscope and the SG you can barely see something through the carrier signal. If I use a stock mic and whistle it starts to show a little wave form, but if I hook up a D104 power mic I have a...