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Palomar TX75 Linear
i just recieved this amp and was wondering if i should even bother putting it in. at 75 watts it is only about double what my P&T'd 29 is swinging at. should i even bother and do i need to have a cb tech "mate" them up so as to not ruin eithor. i believe amps like this require a dead key of around 2. does that sound right?
DeadReb245 is your guy on this one, he knows a lot about modded CBs and linear amplifiers, but all I can tell you is that your Wilson 1000 easily withstands the power of that particular linear... no idea how much gain you will get using one, transmission and reception... I don't use one, don't care that there are illegal, it's next to impossible to track you down plus lots of truckers use them widely, I just don't feel the need to use one, my CB with the Wilson 5000 is doing a terrific job so why would I spend more money on something that is not needed right now!
i only ask because it was given to me by a good friend and i wasnt really sure i wanted to put it in. especially given the small difference in output. im not real familiar with linears. so far im extremely happy with what i have.
PM DeadReb245 and see what he tells you...Originally Posted by BullyDawg19
I'll take the amp off your hands if you don't want it lol
Re: Palomar TX75 Linear
Well, this is a touchy thing. I mean of course you'd like to have the most power you could have. However, your 29 is already peaked and tuned, which means that it's definitely deadkeying more than what you want to drive that amplifier with. I am assuming this is a low drive amplifier. Yes, normally you will drive a low drive amp with 2-2.5 watts. A radio shop will normally set them somewhere in that range for use with a low drive amp. That being said, it is always best to bring the radio AND amp to a radio shop and have the radio set to whatever wattage works best with the amp. All amps are different, and sometimes you can drive it with a little more and get just that much more out of it, but you NEVER put more than 4 watts deadkey into a low drive amp. All of this aside though, your 29 has what is called a "swing kit" in it, and is likely swinging 30-35 watts. This is also more than is considered "safe" to drive an amplifier with. Two of the locals here have burned out their amplifiers driving them with 29's and the very same swing kit you are likely using.
My 2 cents: Don't bother using an amp with the 29 unless it's at least a 200 watter, and if you do, take them to a radio shop and have your output toned down so as not to burn out the amp.
Also, if in the future you do want to use the 29 with an amp, I'd recommend having a radio shop install what is called "variable power" in your radio. This way you could turn the wattage down for use with an amp if you'd like, and then turn it up when you're not using the amp.
I hope this helps.
i happened to run across the spec sheet walcott sent with my radio. it says -
Peak and Tune with 1969 Final (CB20W/2SC1969 Transistor)
Power output prior to peak (TX Power - 4) ( Peak Power - 14)
Peaked and Tuned with Higher Output Final (TX Power - 8 )( Peak Power - 36 ) As measure on Bird Wattmeter.
RX - .5uV
i take it that i shouldnt bother with the 75 watt amp. maybe i should wait and get a hold of something in the 200-300 watt area before making any changes. what do you think?
Thanks for all of the help.
I personally wouldn't. Like I said though, you could take the radio back to Walcott and have them install variable power. You certainly do not want to deadkey 8 watts into that amp or any low drive amp for that matter.
I, myself, would wait until I had something that pushed at least 200 watts swing and that I planned on using for the long term. I would then take the radio and the amp to Walcott and have the radio's wattage specifically set to make that amp work its best. The differences here are probably not significant enough to really be concerned about, I'm just telling you what I would do for peace of mind. After that, you could always try the 75 watter you have with the 29 for fun. Just because you have a radio "paired" with an amp doesn't mean it won't work with other amps, it will just make that specific amp work its best. As long as the radio is set to drive one low drive amp, it should work just fine with all others.
If you do have variable power installed though, ALWAYS ALWAYS ALWAYS remember to set the 29 to low power whenever you're using it with an amp. If not, say hello to a burned out amplifier.
i hear ya. im having another issue also. i got the wilson 1000 and also a short load to go with it. i havent been able to get my swr's below 3 with the short load but they stay around 1.1-1.3 across the board with the 62". do you have any ideas why the short load would be so high. i was wondering if maybe the ground wasnt sufficient or something. i am going to uninstall the roof mount and try to clean up the metal where it makes contact and maybe run a couple of ground straps from the body to the chassis underneath. would this help the short load? i really want to use it for the extra clearance.I personally wouldn't. Like I said though, you could take the radio back to Walcott and have them install variable power. You certainly do not want to deadkey 8 watts into that amp or any low drive amp for that matter.
I, myself, would wait until I had something that pushed at least 200 watts swing and that I planned on using for the long term. I would then take the radio and the amp to Walcott and have the radio's wattage specifically set to make that amp work its best. The differences here are probably not significant enough to really be concerned about, I'm just telling you what I would do for peace of mind. After that, you could always try the 75 watter you have with the 29 for fun. Just because you have a radio "paired" with an amp doesn't mean it won't work with other amps, it will just make that specific amp work its best. As long as the radio is set to drive one low drive amp, it should work just fine with all others.
If you do have variable power installed though, ALWAYS ALWAYS ALWAYS remember to set the 29 to low power whenever you're using it with an amp. If not, say hello to a burned out amplifier.
RW'07 is your man on this one. I know nothing about the short load.
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