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    Weird Cobra 29 LTD WX Classic Problem

    I've got two older (Taiwan) Cobra LTD WX Classics, one of them is a 29 LTD and the other is a 25 LTD. I have a weird problem going on with BOTH of them, and that is: When each of the radios is switched OFF, yet connected to a CONSTANT 13.8 VDC source, from time to time, occasionally, the...
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    Cobra 29 LTD ST Help Needed

    Hey guys... hope you all are staying warm in this bitter cold. (Where's all that "global warming" they promised us?) lol;) Anyway, I've got a Cobra 29 LTD ST (SoundTracker) with an interesting problem: The S/RF meter seems to work fine on RX but on TX, it doesn't register RF or CAL, it...
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    Cobra 29 LX WX receive gain adjustment?

    I've got a Cobra 29 LX that works perfectly, nifty little radio with a BOATLOAD of cool features, HOWEVER, (and maybe it's my base antenna), I'm not getting enough gain on the WX band. Where is the adjustment (internally) for WX freq gain, if any? Thanks:)
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    Noise Blankers that actually Work?

    Recently I took some 'jazzing' from some fellow Hams when they observed that in addition to a VHF transceiver, I also run either an AM/SSB CB or Export 10/11 meter rig in my mobiles. When they asked me WHY, I said: "Because MOST of the HF Amateur gear out there has noise blankers that are...
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    Help needed for Cobra 148 NW ST

    I've got a used, (and Factory Reconditioned, no less) Cobra 148 NW ST that is giving me fits. Of course, the NW doesn't work, but that's not the issue. The issue is: when I first got the radio (eBay of course) it wouldn't transmit or receive on channels 30 - 33. PLL and everything else...
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    Difference(s) between SS-3900 and 148 GTL EX

    I recently purchased a radio that, on the OUTSIDE front, appears to be a Super Star 3900 (single final), but on the rear, does NOT have the external frequency counter jack like virtually ALL of the SS-3900 and SS-3900GHP's I've owned in the past. Not only that, but when I opened the radio...
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    eBay: SS-3900 w/RFX-75

    Here: SS 3900 w RFX 75 Rev 2 Top Gun CP 1 Compressor and Much More | eBay
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    eBay: EKL-2030 MOSFET Cobra 29

    Here: Cobra 29 Classic with MOSFET and More | eBay
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    eBay: Dual Final DX-949

    Here: Galaxy DX 949 Dual Finals Heat Sink 1969's not MOSFETS | eBay
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    MOSFET Cobra 29 Harley Davidson

    Here: MOSFET 2003 Cobra 29 Harley Davidson LNIB | eBay
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    eBay: TR-296 all Chromed

    Here: Texas Ranger TR 296 DX Chrome 40 CH Am SSB Minty RARE | eBay
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    CP-1 Top Gun Compressor: Scam or Science?

    I've done some by-the-ear, and by-the-meter, and over-the-air testing of the CP-1 Top Gun Compressor from Top Gun Technologies Welcome To Top Gun Technologies and have really NOT noticed any discernible results on either AM or SSB (where I expected it to perform.) The two (2) radios I've...
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    Who's the BEST Cobra 148-GTL Tech?

    Happy 2014... I have an old 1990 (Philly) Cobra 148-GTL that is giving me fits; works great on RX, and will transmit an AM carrier, but will NOT modulate properly on AM or SSB. Have already changed ALL electrolytic capacitors, RF predriver, driver, and final, have tested ALL transistors...
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    MOSFET Question

    Happy New Year one and all. Over the past several years, I've done various conversions from NPN finals to 2030 or IRF520 MOSFETS with mixed results. In single final radios, I typically see the MOST gain with the IRF520 versus the 2SC1969. In dual final radios, it's a 50/50 split between a...
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    Help Me Decide

    Until now, the 'best' 10M / 11M Vertical(s) I have run are: Midland 1/2 wave end fed vertical (aluminum) Imax 2000 (fiberglass) Shakespeare ABS-1600 Army Stick (fiberglass): currently in use With all the hoopla over the Sirio GainMaster I have been considering a new vertical for...
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    Best Japanese HF Amateur Transceivers for AM Audio

    With all the external audio devices, speech processors, compressors, companders, mic selections (i.e.: Heil elements), DSP units, W2IHY boxes, etc., etc., available today, enhanced SSB transmit audio is within easy reach of almost ANY station. Heck, my old Electrovoice microphone element even...
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    RCI-3900HP Review & Initial Impressions

    Just picked up a new Ranger RCI-3900HP AM/FM/CW/SSB dual (MOSFET) final radio this weekend & have been playing around & modding it. Here are my initial impressions: Out of the box performance is DISMAL (at best). Review can be found here: YouTube - RCI 3900HP Review It was off freq and...
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    Tech Help President Jackson

    Folks, A friend of mine gave me his President Jackson to look at because of no RX or TX. The Jackson is a 5 band AM/FM/SSB transceiver. This radio has special meaning to him, as was his late Father's. Anyway, radio lights up and works good on PA mode, but no TX or RX. Last time the...
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    Starting to like the MOSFETS - am I wrong?

    I've done dozens of Cobra 29's over the years, and was always partial to 2SC1969 finals. However, I recently got the opportunity to work on the following FACTORY MOSFET'ed Galaxy transceivers: - Galaxy DX-98VHP which has three (3) IRF-520's (1 as a driver and twin finals) driving an...
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    Cobra 148GTL VS. Galaxy DX-949

    "Ladies & Gentlemen...... let's get ready to r*mble...." In this corner, we have the returning heavyweight AM/SSB champion of the world, a (1990's?) side mic Cobra 148GTL. TX section consists of a 2SC2166 driving a 2SC1969. Mods include: resistor mods for increased audio output on TX, volted...
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