It may not be a crime, but it's dumb. Successful manufacturing includes careful sourcing of components and maintaining QC of both incoming components and outgoing products. ALL consumer products, inc
Re-read my sentence. I am not objecting to the use of open wire line when it is matched to the antenna, but to the use of it as a band-aid for badly matched antennas. I've toured several large short
Perfect example. Another would be a full wave dipole. :) But more generally, I'm talking about putting up a single dipole, whether center-fed or off-center fed, feeding it with open wire or window li
Rick, I hate to be a wet blanket, but off-center fed antennas produce VERY high common mode voltage/current, enough to fry a very good ferrite choke with as little as 100W. Running a power amp is rea
But Rick, the common mode current varies along the line, just as it does on any antenna. I suspect that you measured the current at or near the shack. That is VERY different from what it is up in the
On Tue,9/22/2015 12:42 AM, Rick - DJ0IP / NJ0IP wrote: When Jim said you fry the balun, my interpretation was, it gets so hot that it self-destructs. This includes things like wire insulation burning
On Tue,9/22/2015 2:05 PM, Rick - DJ0IP / NJ0IP wrote: I agree that if you are going to run very high power, you should be running antennas designed to better cope with that. The Windom is usually cho
As some of us, and some of our fellow amateurs have found out, some manufacturers don't stock parts more than about 5 years out. Yup. The only Ten Tec gear I currently own are three Titan 425 amps, o
On Fri,8/14/2015 4:57 PM, Wade Staggs wrote: *Randy,* * Check out your inbox for the message from tvman1954@gmail.com <tvman1954@gmail.com> The 2 page schematic is all that I have. Sure wish that we
I have two of the very nice AEA MM-1 keyers for sale. They are ideal for keying an amp like the Ten Tec Titan and Hercules II, where QSK circuit is designed so that you key the amp and the amp keys t
In the 70s, I had jobs doing both field and bench service, as well as managing the service department of a sound and video contractor. We were charging $60 then, and that rate was needed to cover our
The words "improve transmit fidelity" in this context are mis-applied. This is ham radio, and our objective is COMMUNICATION, not wider audio bandwidth. Lower audio frequencies (below about 500 Hz) m
I don't think it has anything to do with DSP or analog. I nearly always used narrow crystal filters for CW in my Omni V+, TS850, Elecraft K2, and FT1000MP. I think it comes down to two things. First,
I'm selling some equipment for my friend Pat Miller, W6DRX. He and his wife are moving from their house (which they will rent out) to a sailboat that they have bought, so virtually all of his ham gea
It's a K3/100 with KXV3 and 8-pole roofing filters for 400 Hz and 1,8 kHz. Condition is like new, not a scratch on it. Pat was an active contester when he bought and used the rig (only at home), then
Here's my take on it, after studying what Elecraft says on their website. (I didn't go to Dayton). New I/O board, solving a shortcoming with the original K3 and adding USB control and audio I/O via U
In the first paragraph I said "making the receiver work down to 100 kHz." Early users of the new K3SYNA synth board in their K3s report listening to signals in the experimental ham band below the AM
I had to use one of these on a contest trip to PJ4. Like most of what comes out of that MS company, it was a POS. So was a bigger amp from the same company. No comparison to Ten Tec. 73, Jim K9YC
It's VERY nice. Puts out 600W, even in keydown modes, except about 500-550 on 6M. I also have a Herc II, very nice amp. About 500W. They run fine on any beefy 13.8VDC supply. 73, Jim K9YC