Recent content by 960

Toll Free, what do you think you would get out of a a 3cx1000 with a 2watt deadkey swinging 20 Bird from a radio (or about 40pep watts). Will the 3cx1000 handle this? If so, I wonder there is a popular amp to use that doesnt have limiting and filtering and crap like the ameritrons for...

What would be a good steel tube driver for the 3cx3000A7?? It needs to DK up to atleast 700 Bird. 1 4cx250b? 2 4cx250b? 4 4cx250b? 1 4cx1000A? Another other ideas? Steel on steel is what my buddy is looking to do, no glass. Thanks for the suggestions.

What are you guys using as a driver and how many watts to drive the AL1200? Would a 1 or 2 2290 box work with a cobra 1 final radio? On AM, What kind of deadkey and forward RMS power do your see and as well as PEP? I assume this amp will do over 1kw Bird (or RMS) from a decent deadkey, I...

Same as Wilson 5000. The 5000 seems to get out and hear a touch better than the 1000. I have both, and would go with the 5000 if I had to do it over again.

No they wont. I did this test before to local stations and saw very minute differences. Going from a A99 to a 6 element M106C is a absolute huge jump, but dont expect that when your already comparing a 4 to a 6 beam. Figure your output as a round circle ballon. An omni directional antenna...

I see, your faced with a tough situation. You already very high in the air, and your already running very high power. Even going to a M108c will bring you 4db more gain which is not going to be worth the hassle of that long beam and now your super tight comapred to the m104c. Even if you...

QRN is correct. I have noticed that once you go past 4-5 elements the gains are very small (point of diminishing return), and you gain a tighter rejection for the most part. If this was my personal situation I would: I would either put the M104C up higher (if you can), yagi designs are...

I can vouch for the Coily Enforce Antenna. I have used the older generation enforcer and now the New Enforcer with larger coil and double tubed mast and Bird QC connector for quick swap to any other connector I want to put on the antenna. I have run A99, Imax 2000/GPK, Maco V58/V5000, Signal...

DTB, Ok I think I know what is going on. As I go up higher in the channels (like ch 80 for example) It swings about 150w, If I go to 28.000mhz it swings to 170w on my dummy load. I think now its time to figure out the T pots T719-T723 to align the power band down to the CB channels...

Astron RS-35M power supply set at 14 volts and a set of CPI WM1000 watt meters (the white ones that match the CPI 2000 radio). The meter works fine, all the base amps I use in the 200w range setting of the meter are accurate (on both pep and rms). Infact, this meter is as close to a bird that...

DTB, I went up and down a couple turns on L21 pot and did not notice a increase in power. It still stays around the 120watt mark. Did you have turn the pot down more turns? I dont want to bottom it out and be screwed. Also, let me know if you turned T718-T723 with any success in conjuction...

DTB, Before I try it, how much more pep power do you really gain by turning that brown slug? (right now the radio modulates to 120watt pep on AM). Let me know before I take the wax out. Thanks

DTB, Replaced the 470k I used for a couple weeks at R181 with a 1Meg and the background picked up a little and they tell me I am even louder. Nice thing is no splatter! BTW, I havent touched any of the tuning pots yet. I am getting about 120watts on AM on a swing from 40 dk. What is this...

This is one of the best sounding radios I have ever owned out of the 350 or so radios I have owned in the past 15 years. I am a SMD tech and love to work on this radio for myself and the mods gave great results and I am still in the process with trying more.

DTB, Did the mods you described. (C158 to 4.7uf and R158 to 470k ohm). My Cobra 200GTL is bare stock. No mod limiter pulled, no pots have been touched or turned for power alignment. I noticed the background noise (computer fans, etc..) in my room picked up (verifiying the mic preamp mod...