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Got a Mirage mx-36HP3 on the desk today. Board number EPT-DX2912Z. Issue: Transmit audio has constant oscillation sound, sounds like background air noise and can't be brought down with mic gain off. Evaluation: Q39 looked burnt under it on the board. Removed Q39 and noticed it's the wrong...

I just got done cleaning out the years long tech that recently passed away. He had a lot of new parts. But I have some questions for the experts on this site. One of the parts containers has new finals in the compartment that's marked 2SC2312, but in the container are brand new "en 596N". And...

Got another Galaxy DX - 2547 on the desk today. Ehhhh, should I say hacked up 2547, lol. Issues: SSB xmit garbled. RF power control non functional. Extra channel switch broken. Evaluation: Q39 limiter (up front, near mic amp) was gutted out. Wrong limiter to remove on a SSB radio. This would...

Got an old school Mirage 88 on the desk today. Basically a Galaxy DX-88HL. This used to be the personal radio of a local "tech", ehhh, from years ago. I knew the man personally, and he was good at antenna building and amp building. Well, after looking over this radio, I can't say the same on his...

I've seen several galaxy, Connex, general, etc...10 meter exports with variable key mods done to them, but haven't ran across one yet with the proper way of adding a variable key to a Hi/Lo power switchable radio until this radio. It's a Connex 3300 mobile with Hi/Lo switched RF Power switch...

Just got done with an old, old school Cobra 29 LTD Classic (sidemic). This radio is bone stock, other than the cap/resistor combo (470uf 25v + 56 ohm 1w) in place of JP36. This radio has the stock final and driver in it with no power/tweak mods at the final (R56, etc...). No parts are clipped or...

Got a Road King RKCB Classic (UT414) on the desk. It was given to me in a trade, and now a new guy on the air wants a nice 40 channel radio but can't afford much, so I decided to fix this one and set it all up for him. I'm giving it to him because it was given to me and he can't really afford...

Hi all, As many of you know, AI is now upon us. Some of the AI units seems to produce sensible answers, but then there are those that spit out garbage. The AI technology can be very useful at times, depending on which AI you use. Lately I've been using an AI service provided by the Brave...

Got a Galaxy Melaka base on the desk. Issue: Weak receive, high static noise. Constant 3db of signal with heavy hash noise. Local strong stations only put about 6db on the meter (with meter turned wide open). All modes. Transmit is great, other than SSB sounds distorted (all limiters still...

I recently ordered around 25 PL259 ends that were listed as Teflon center from American Radio Supply. I've always thought the Teflon ends had a yellowish tan or brown center color while the plastic foam centers were all white. Well, these are listed as Teflon, but they're white centers. The...

Got another weird one on the desk. Galaxy DX-2547 (no mods other than frequency expansion). Issue: No AM output Checked: AM receive - great SSB receive - great SSB output - great both modes Alignment - great, all freqs deadon. All switches/knobs work as new Meter and all lights work as new No...

Got an old classic Cobra 142 GTL on the desk. Issue: Transmit low in all modes Receive low in all modes Controls/switches scratchy Variable key not functioning correctly Decided to do a complete recap first. Upon removing the old caps, I noticed the C92 location had a 330uf 16v cap instead of...

Got an old school two button President Washington (upd858 PLL), with an old school 1306 driver and an old school 1307 final on the desk. Issue: Blows fuses once turned on. Cause: All caps, every single cap was shot. Fix: Recapped entire radio, even power supply and button board. After fixing...

Got a Galaxy DX 2517 (mosfet version) on the desk. One of my previous works. Issue: Owner claims the frequency counter would switch through frequencies all by itself while just receiving. Did not affect the actual receive or transmit frequency, radio still received and transmitted on right...

Got a Connex CX-4600 Turbo on the desk today for just a checkup after 4 years of being stored. After warming up for 30 minutes: Hi deadkey = 75w, WOW!!! Lo deadkey = 25w, WOW!!! PEP swing at any deadkey level = 225w Peak swing """"" = 165w Average swing """""" = 92w Found a diode alone...

Just got finished working on an old Galaxy Saturn (ept3600 board) that had some receive issues. AM receive was ok, not the best in the world. AM meter had to be cranked almost wide open. SSB receive was weak, it was there but volume had to be turned up halfway just to hear people. SSB meter...

Just posting on my review of the new RCI-29 base radio. Two of my local friends joined together and bought 2 of the RCI-29 bases from Anderson Radio Supply located in SC. They had to place a pre-order about 3 weeks ago for the radios. Well, the radios finally arrived at their homes. One guy...

Got a Connex CX-3300HP on the desk today with low VCO voltage. Cannot get the VCO voltage up to 3.20v. it'll go up to 2.19v and then drop out or start dropping back down. Issue with radio is, frequencies are all out of whack. 10.2398mhz measured on pin 4 of the PLL. 15.23??mhz measured at TP3...

Got a Connex 3300hp on the desk today for a quick check. Owner said he bought it from the last tech around here which passed away a couple years ago and never hooked it up. He said he bought it used from the old tech. It has all new caps in it, someone recapped it before it got to me. Limiter...

These operators are slowly starting to push tube type radios on me, lol. Problem is, I know nothing about how a tube radio works. But that's never stopped me from accepting the challenge. This 201 is not the hand-wired 201. It's the second release 201. Issues: 1. Loud hum in receive speaker...