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Alright! Defiantly getting somewhere now. I have 34.985000 on Channel 19 per the alignment directions with no drifting. From CH 1 to CH 40 are all within 10 Hz of where they should be. I am having an issue with aligning CH 19 TX LSB to 34.982500 Mhz I have VR3 all the way to one side and it...

Ok the 33 pf cap got me to 35.20#### the Hz are drifting around from 35.202 - 35.204. I can push the UHIC007 IC toward L13 & L14 and the drifting calms down to 35.20447#. Any ideas? I re-flowed the solder on the UHIC007

I'm pretty sure I have some 33 pf disk capacitors. I will give that a try this evening when I can get to the shop and let you know how it goes. Also I will post a picture of what I'm seeing on the Scope off TP1. Looks like it is showing both the 70 MHz and 35 MHz frequencies.

Also since removing all the mods I am reading 69.528917 MHz on Channel 1 and 70.408966 MHz on Channel 40 at TP1. Reading 10.238 MHz on Pin 8 of he MB8719

I have 11.111224 MHz at the base of TR24 (2SC1675) Oscillator. Not sure how to adjust this or if it's close enough. I'm using the Stalker IX/XV Service manual as I don't have the Service Manual for the 142 (Same board) and it doesn't show any thing on aligning the 11.1125 MHz Oscillator. If...

I figured it out. Just had a hard time finding R415 & R417 since they were hidden on the board with the NB/ANL, CB/PA & MOD - SWR Switches.

As I understand it with the Pin 3 mod you will get the following frequencies Chan 12 - 27.425 Chan 13 - 27.435 Chan 14 - 27.445 Chan 15 - 27.455 Chan 16 - 27.475 Chan 17 - 27.485 Chan 18 - 27.495 Chan 19 - 27.505 Chan 20 - 27.525 Chan 21 - 27.535 Chan 22 - 27.545 Chan 23 - 27.575 Chan 24 -...

I am attempting to remove the mods on this radio before trying to do anymore troubleshooting on the 40 Mhz signal I am getting at TP1. Can anyone tell me where the clarifier wires originally connected to the board? Currently I have an orange (maybe red) wire running from the left side of the...

Well I took a 10 M ohm probe from my Tektronix scope and put it on my counter. When probing TP1 I get no signal. I decided to play with some resistors inline on the counter probe input and see if I could find a value that would reduce the sensitivity. Anything above 1.5 k ohm I got no signal...

I have a Scope with a couple of 10x probes. I'll slap one on the counter and see if it makes a difference.

When I get some time tomorrow I will take an RF probe and see if I have anything on the pre drive TR38 (2SC1973) if not I'll check voltages and if they are off test the TR. If everything looks good there I will move on to the TX drive TR39 (2SC1306) and then the TX final (2SC1969) If I should be...

Well I couldn't find a way on either of my 2 working counters to reduce the sensitivity. Could there be something in the radio creating the second harmonic frequency or do you think my counters are just to sensitive? Also L13 (VCO coil) apparently has never been "turned" as it still has wax in...

I will check and see if the input sensitivity can be turned down on the counter I am using. I have 2 other counters that I can check also...

Will check the VCO tuning coil (L13) for bad solder joints when I get in tomorrow evening. Will I need to remove the VCO tuning coil to test/check or can this be done with it in the circuit? Thanks!

So I checked checked for any solder bridges and didn't find any. I took a small screwdriver and heard a "popping" sound when initially touching the "hot" foil pads under the crystal filter. If I kept the tip of the screwdriver on the pad the "popping" stopped. No movement on the s/rf meter. I...

Thanks for the reply. I kind of assumed it was the in the PLL circuit since there was no transmit or receive and wasn't getting the right frequency at TP1. I will try your suggestions and post what I find. The radio had the same issue prior to replacing the Caps. Also when replacing the...

I have a 142GTL with no transmit or receive. Radio powers up. Can key the mic and the transmit light come on but no rf out. I have checked the voltage on pin 6 of the PLL and have 8.25v. Pin 8 is reading 10.238 MHz. There is rf voltage at TP1. There is 4.8v at TP9. The problem seems to be in...

I picked up a Gray 150 A amp that has a burnt inductor/choke on the input. I am trying to determine the value so I can replace. The only schematic I have been able to find for this amp is on CBTricks. http://www.cbtricks.com/Amp/gray/150/graphics/gray_150_sch.pdf It seems to be a redraw and...

Does anyone know where to find a schematic for the Silver Eagle Plus D104? I have one of these that will key up but I don't get any audio out of the microphone and could use a schematic to troubleshoot. I have already verified the element is working. Thanks!