Search results

Hi Everyone, So, I am aligning this 142GLT and there is a VR installed in place of where T1 would be. I have been researching this and it seems that on the 140GTL T1 is installed but on the 142GLT it may not be. The VR is not labeled and there are no alignment details for it. Any ideas?

Good Evening Everyone, So, I have a Cobra 142GTL on the bench for an alignment. The radio does TX and RX normally but could use some minor adjustments. I was looking through it and noticed that C118 had been upgraded from a 470uF to a huge (in size) 1000uF 50V cap that was blocking VR6. I...

Has anyone had an issue where the forum appears like this due to an add on the right?

Hey Everyone, So, I have this Colt-890 from a local op on the bench to see if it can be resurrected. A few things here. I have never worked on a Colt radio before and have never even heard of an 890. This radio is from the late 70’s, still in the original box, has a Cybernet board in it...

Hey Everyone, I have a Spartan PLL 40 on the bench for repair and alignment. I have searched hi and low for any info on it. The closest I have found is the Centurion PLL40. I am finding that it is not the same. For instance, in the PLL section the Spartan has 4 CT's and the Centurion has 3...

Hey Everyone, So a local op asked me to calibrate his PW-5000 meter. When I do this I use my Bird 43 as the basis and adjust another meter to it. The op's do realize that it is only a relative reading so most are ok with it. This meter seems to be well built and seems like it could be a...

Hi Everyone, A local OP has asked if there was a way to convert his KL503 to HD. I looked over the schematics for both and the only thing I can find different is a connection from J1 to R12 and the addition of the 7dB attenuator (see below). Are there any other changes that need to be made?

Hi Everyone, So, I am finishing up this 148GTL and had an issue with TX after the alignment. I put it on air and after a few minutes it quit switching into TX mode (no TX light). I took it back to the bench and figured out that it was getting 1.6vdc at TP9 (PLL voltage) instead of 3 or more so...

Hi Everyone, I have an op with a 2950DX and mostly uses it on AM. When he 1st keys up the meter will display 4 bars and display 3-4 bars of red on modulation. After about 30 seconds of use (not continuous) the meter will no longer show modulation. It wil contiinue to show the carrier power...

Good Day Men, I have a 148 from Malaysia (1992) on the bench for aligment. I have removed the glue and I will say, this one had more corrosion than I am used to. I had to replace a few resistors, caps and 1 diode becasue they were so corroded. The radio was way off frequency when I started...

Ok, so the life of a hobbiest. I am aligning a radio and having trouble with the receive alignment. I play with everything but it turns out that my HP 8660C signal generator is not working correctly. When I go from -80dB to -70dB the signal drops out. It's a battleship of a piece of...

Hi Everyone, I hope you all are safe as these storms blow through!! I have a Cobra 29LTD Classic, 4-pin side mic, PC-900 board) in for alignment and everything works except the meter shows nothing on RX. The RX did align fine (-12db sinad @ -113db). The RF Gain knob and alignment adjustment...

Good Day Everyone, I picked up a Pride 150 in great condition (inside pic attached). I tried it out on air and a local op siad it sounds great on AM but bad on SSB. His comment was that it sounds like it's not biased correctly. There are 2 varicaps on the inside and I am wondering if it may...

Hi Everyone, I know that I have a few posts on here about various radios. One of them has parts ordered and one of them I am in the step by step process with it. Today I have a Cobra 139XLR that had some PLL mods (extra channels) as well as a strange clarifier mod. I removed the channel and...

Good Afternoon Men, So I have entered the deep end of the pool with this radio. I am navigating way beyond my knowlege but I somehow think I'm close. I have this Texas Star 696 base that has the EPT069610Z board in it. For a schematic I am using the Galaxy DX-959 from 1997 (attached) and it...

Hi Gang, I have searched WWDX and cannot seem to find the answer to this. I have on the bench a DX 400V with all 4 button bulbs blown. I will say that in my opinion its due to the amp being powered with too much vdc but operators will do what they want. I've experienced that LED's do not last...

Hi Everyone, So in my continuing discovery of interesting things with the 2950DX 6 one of the variable inductors does not have any affect on the TX alignment results. I am drawing from the 2950 DX/CD alignment guide for this. The instructions say to put the radio in AM, TX with no modulation...

If anyone keeps track (I actually hope you do not) I've been asking a lot of RCI/Galaxy radio questions recently. I am finding that my local radio community mainly uses these radios and they keep getting more of them. While I do not talk on air very often due to the lack of free time I did...

Hey Everyone, I need to align this DX-6 and while most of it is similar to other RCI radios the transmit section is a little different. There is no shorting board and there is only a jumper to align the finals. There is no jumper for the drivers but there is a spot on the board near the...

Good Day Everyone, So, I have now a Sinadder 3 that was calibrated in 2020. I have a few questions on aligning a receiver with it. I understand the fundamental operations of sending a 1KHz tone through the receiver and the notch filter is allowing that signal through "listening for" or measuring...