- #COBRA 148 GTL RFX 150 FOR FREE#
- #COBRA 148 GTL RFX 150 PDF#
- #COBRA 148 GTL RFX 150 MOD#
- #COBRA 148 GTL RFX 150 DRIVER#
#COBRA 148 GTL RFX 150 DRIVER#
but no rush.Įven STOCK, the TRC-465 is the "sleeper" of all sleepers with it's 2166 driver and 1969 final. Once I find one of those Galaxy Expo 'N' kits (I believe), will probably add channels to it. I run it mobile in my econobox compact car, with a trunk mounted antenna, and can EASILY work anybody I hear on AM or SSB. remove the wires from the SWR CAL, and tie the CAL circuit to where it is wide open. You end up with variable power on the SWR CAL knob, but don't loose the function of the SWR bridge. works great with linears, and causes no harm to the radio.
#COBRA 148 GTL RFX 150 MOD#
The third, (and current) is the TRC-465, which I've opened the clarifier on and, mostly because they said it couldn't be done, installed an RFX-150 on. Here is a neat little mod for the 148, 142, & Cobra 2000 GTL.
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In fact, with it's DUAL 1969 finals and expanded freq capability my Midland 79-290 quickly replaced it.
Having said that, I've only owned 3 Realistic SSB rigs: the first was a 23 channel rig, don't remember the model, but was pretty bland and unimpressive. Probably because they pack a lot of PUNCH in a small, robust, stable, and easy to work on package. While there's no dispute that the Grant XL, 148 GTL and/or TR-296's are GREAT SSB rigs, there is a reason WHY the PC-122 (and TRC-465 equivalents) are known as the Technician's Radio's of CHOICE.
#COBRA 148 GTL RFX 150 PDF#
pdf information.+1: The TRC-465, the PC-122, PC-122XL, and the TRC-453, for all intents & purposes, are the SAME radios. KHOXJMBJNW The subject of this eBook is focused on COBRA 148 GTL MANUAL DE.
#COBRA 148 GTL RFX 150 FOR FREE#
This Information Is Provided By Ĭlick the models below to open. Get cobra 148 gtl manual de servicio PDF file for free from our online library. This radio is modifiable for extra channels the one I had bought covered from 26.xxx to 29.xxx. The frequency counter is only a 5 digit counter. It basically is a Cobra 148 with the Frequency Counter and some push buttons instead of the standard switches. Gotta figure it should include directions with nice, clear photos. The Cobra 148F GTL is unique because it came stock with a built in frequency counter. Still working on a “kit” of the Ten-Volt caps. But the 10-Volt rated electrolytics are a different matter. We never recommend replacing all the electrolytics in a radio that’s only 20 years old or so. At the quantities I buy them, the 25-Volt part costs pretty much the same. When you buy 10,000 of them the 10-Volt part may be a bit cheaper. We never use a voltage rating lower than 25 Volts for that kind of part. Anything from 33uf to 220 uf will do the job. It’s there to keep noise and feedback out of that chip, and out of your transmit signal. Just don’t run the radio with that capacitor removed. If you see any joy on the watt meter, that means it was bad. When C95 shorts, a 100-ohm resistor R108 that feeds to it may get REALLY hot and also have to be replaced. IC3 provides your modulation on SSB and your carrier on AM. Might have to push the wiring harness aside to see it. It’s near the center line of the main circuit board about one-fourth of the way back from the front edge of the board. Within a week or two of being put back into service, one of these 10-Volt caps will short internally.Ĭ95 is at the rear end of IC3, a type AN612 chip that has a single row of seven pins. More often than not, this occurs after a long visit to the shelf. The 10-Volt (and 6-Volt) rated capacitors tend to fail first, around the 20-year mark. You’re looking for is C95, a 47 UF (usually) electrolytic rated at 10 Volts. The part causing your failure is just one of a half-dozen of them that we see cause mischief around or past that 20-year mark. Loss of all transmit is just one of the common symptoms caused by one shorted tiny filter capacitor.Īnother one will kill all receiver audio, and another will kill all mike audio, but still show you a dead carrier on AM transmit.
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