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One must be apply ones self all the time. Well I mean every time I turn on the radio and listen to the bands filled with noise and nothingness, I say well some body gots to be out there "Breaker" ...… just static…..just static..... I turn the Volume up and rotate the beam around all over. The...

Hello All: Yeah that's a big Ten-4 on what BBB said, a muffin fan on top the amp just above the tubes is a big help. Thanks for tip on the 572B tubes at RF Parts. Jay in the Great Mojave Desert.... Only 150 miles to the next fillin station

The Scope Carrier / 100% Modulation sp5it posted looks good to me, like out of a text book. The ARRL Hand Books use to show photo graphs of AM and SSB transmitted signals and such, picture perfect patterns. Looking at the locals here a few years ago with a scope connected to a receivers IF...

Hello All: Air flow is very important, knowing this from my latest experience...…. Using a Commander 1250 Amp on 20 meters I noticed the amp was running very HOT, why is this all of a sudden when the amp has worked great for years. Looking over the amp The Teflon chimney looked like it got...

Hello All: Quit a few postings here, good deal. Going thru extremes to achieve a accurate electromagnetic measurement is not overdoing it, if gets you a accurate repeatable measurement. Then it can be compared to a analytical computer generated electromagnetic measurement. Yes I have a few...

Hello All: I am reading all the postings here on the Sigma 4 Antenna. And its all healthy hobby interest stuff. I am not a fan of this antenna for my own opinion of unmeasured reasons. But the interest in the antenna is impressive. I have made upgrades to the Sigma 4 type antennas, using...

Hello Jeff: Ok thanks for the info here I printed out the bias sites for reading. I have a circuit I made a few years ago using a voltage regulator a Zener diode and another voltage regulator,... I think. It regulated right at the 1 volt level at 3 amps. I was impressed with the guys 3 bias...

Hello Jeff: Ok good deal thanks, I think I can make one up with a little trill and a lot of error. Jay in the great Mojave desert

Yeah the JB2000 is a lot of horse power / steam, I know the fiberglass non ground plane antennas have interference problems at times, as compared to the metal 5/8 wave ground plane antennas. Yeah all the others said. Good grounded radio well tuned low SWR antenna Torrid cores with the headset...

So whats the best way to bias the transistors in a amp, the diode and resistor method. Or the voltage regulator IC with a pass transistor? Jay in the Great Mojave Desert

These type of entry level amps used on say the Zoo repeater on 147.435 in LA just for the RF Wars, is a big a big deal at the local TRW swap meet. I get to hear the 435 repeater sometimes if the conditions allow coming over the mountains and such. Kind of funny all the hoo raw antics. While...

Oh yes still popular around the camp fire. While camping out here in the Mojave Desert one of the guys has a small FM Broadcast Transmitter, and has many of the old country and western (both kinds of music) music recorded on a USB thumb drive into his AM/FM radio and then the audio is feed the...

Hello All: The SWR controversy goes on no dought. Antennas will perform quit well with a high SWR on some frequencies and not so well on other frequencies. Measuring two identical 800 MHz 1/4 wavelength ground plane antennas about 10 feet apart, well into the far field. With a network analyzer...

Hello Shockwave: Is this elevation angle info measured data? Or maybe computer generated data?? Jay in the Great Mojave Desert

Hello All: Not sure what you mean about feeding the coax at the match directly? "It's a Hy-Gain Super Penetrator 500 but the coax is fed at the match directly. Same location that the SO-239 was connected." Maybe a photo showing the coax to match directly connection, would be a help. And as...

Hello Robb: Wow great info here and great thread. Thanks. Yeah limiting or reducing the clarifier frequency is a great call, don't need to slide down a bunch of Kc's anymore. Jay in the Great Mojave Desert

Who's Xit3 and what are the mods, kind of lost me there, which isn't hard to do... Jay in the Great Mojave Desert

Hello All: This thread is most interesting and needs to be covered the filter bandwidths vs receiver noise, and received signal audio quality of SSB received signals. Years ago I installed the IF crystal filter in my 148 radio and noticed somewhat quieter receive, didn't know if it was the...

Yo Mudfoot: DX Engineering has them for the RG8X coax, part number is DXE-PL259CS8X-6. They also sell a crimping kit I bought that works great, for different type connectors and such. Had to make up several jumpers with LMR400, using PL-259, N type, and even SMA with adapters. Again the local...

Hello All: I soldered the last end PL-259 connector without slipping on the outer shell being on the coax. Oh wonderfull!!!! This really made me mad as I built up a few really needed PL-259 and N type connector type, coax jumpers. So I left the Advanced State of the Art, International...