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wrote: coils, most dx #### I find this hard to believe. And 5" diam coil is pretty damn big.... like 125mm. Ur 80m mobile ant is still -9 db.... most 80m mobile stations and 500 w is bare

Anyone happen to know what was used to plate the chassis in Detron amps? I have one that has some rust at the seam on the front(behind the aluminum front panel) and thought I would clean it up and

Not all alternators are capable of charging 16-18 Volts. The factors that determine an alternators output are stator windings, stator/rotor spacing, rotor current and number of poles, and RPM.

Dear Jan, I am currently building a GU-84b Grid-Driven Tetrode amplifier and my Anode Transformer is 3.0KV at 2 amps, and the output from the rectifiers and filters are 4,242.0 Volts, D.C.

It only works because for the "sense" lead to see the "14.4" volts it needs to, the alternator has to put out 18 volts... It has to make up that 4 volt pad... It's the location of the sense lead and

ORIGINAL MESSAGE: <leolists@...> wrote: ------------ REPLY FOLLOWS ------------ Best sentence in the whole post. :-) 73, Bill W6WRT

That's an interstuing approch, thanks. I was not aware of the fact that a 12 V (or 14.4 Volt) alternator would supply 16 or even 18 VDC when connect to a 16 or 18 V battery stack. In mmy case battery

Peter, 3 dB is what we've measured using S-meters from an Icom 756ProIII, so for what it's worth. Coupling from the vertical also occurs with the 5 inch loading coil, I can see if cars are passing on

Hi Dick, That is very unlikely at same wire size. 3db difference would mean half of the transmitting power being lost across the coil. The ARRL program "mobile" calculates 1,3db difference. But you

Peter, I found approx. 3 dB difference between a 3 and 5 inch loading coil in on air test on 80 meter. Anything larger than 5 inch the difference was neglectible. Cheers, Dick PA3DUV

I could not agree more Greg. If multibanding is required there is always a compromise. Also remote control is an issue here, this morning when I was tooling down the highway in drizzling rain alI had

The highest performance antenna I have ever had was the Texas BUGCATCHER. Sort of like Peter's. That antenna could get as tall as I wanted and I carried a bundle of parts to do whatever I felt like

Hi Dick, We found not much more benefit from increasing coil size beyond 40cm diameter on 80m. Coils sized from 25-40cm diameter were close in competition, just the wide of the S-meter needle in

Hi, Has anyone built an amplifier with a gu-84b tetrode? In the datasheet the maximum anode voltage is 2.2kilovolt, but I've found a few websites where they apply 3.5 to 4 kilovolt. I wonder if this

OK Hsu -- Rather than sending it and something happening I just uploaded it to my website and you can download it at your convenience. Go to: <http://www.hayseed.net/~jpk5lad/download/400w

Jim! Great!I have not get the information. please send it to my another mail box bd2rh@.... this e-mail located in China can not recieve large file from oversea ,because of fiber problem.

Hi Hsu -- Have you been able to find the information you needed from the Holiday issue 1976 73 Magazine? If not I have that issue in hand. 73, Jim - K5LAD "It's so simple to be wise. Just think

wrote: antenna about I've heard of this causing some health problems for a few in those key-downs they do. Long term exposure though could be pretty bad I'd think. Yup, that's the name of those

Here's another thought, more geared towards the gentleman in .eu who was looking at running a bunch of 2 volt batteries in series, and home charging it. I have done this in the past, and

Now this is what hamming is all about! Oh, yes! The knife switches with 5/16” thick copper bars, the contactors that go CHUNG!. The smallest RF connector in your shack is a 7/16DIN and