3-500Z's are zero bias tubes, Ken. There are variations in the 3-500Z's made by various manufacturers. The Amperex bottles drew less grid current at idle for example, than the Eimac tubes. I draw a d
Heck, I'm still trying to figure out how a group is anti-Ten-Tec. I don't have a Kenwood rig but that doesn't mean I'm anti-Kenwood. It has been my experience that almost no one can tell what brand S
A 572B has nearly triple the plate dissipation of an 811A. As I recall, the plate dissipation of an 811A is 65 watts. The dissipation rating of the 572B is 160w per bottle. Dave Heil K8MN ___________
K8MWO bought a new plasma for his new Kentucky QTH. He plugged it in, turned it on and after listening to his rig, took it back and exchanged it for an LCD model. Dave Heil K8MN _____________________
My 2000 model Sony multi-system TV was the predecessor of my HD set. I was being driven crazy by noise on various ham bands. Then I noticed one day while coming up the drive and listening to an AM b
The master oscillator *may* be different. Before I sold it to obtain an Orion, my Option 3 went back to the factory for service. While it was there, the original crystal oven unit was swapped for the
Not by any serious contester, it doesn't. In numerous domestic contests one who gives his contest exchange info followed by, "QSL?" or one who proclaims, "QSL" after he has received an exchange from
One of my favorites: ZBM-2 Dave K8MN _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec
Often in jest. A few times in earnest. Nothing like trying to secure a station late at night in some African spot and having to deal with a guy who can't copy through a little QRN and multipath. ;-)
I hung it up professionally in 2000. By that time, no one in the Department of State was using either CW or HF RTTY. Everything is by sat or leased line digital and nearly everything is automated. Ev
The State Department E&E radio gear used those B&W folded dipoles with the big resistor in the center. They worked relatively poorly but allowed us to operate on all bands. Transworld made/makes some
Quite a number of U.S. embassies had HF backup until the mid-1990's. Most of them in the third world have SSB "Emergency & Evacuation" gear, but none for the record traffic circuit. There's so much d
You're right. If it is encrypted, there's no problem. Anyone with a portable shortwave receiver can sit outside some embassy and figure out at least one of the frequencies being used. Any host countr
Some countries *used*, at least until 2000, quite a bit of HF. The Chinese are an example. The Bulgarians used to have a cage dipole in Helsinki in the mid-1980's. They had to give up their embassy b
Maybe I just don't get it. I'm able to work very weak DX stations on 160m while they are snuggled up right next to a loud W station CQing. I can pick signals out of whopping QRN on the lower bands. I
There are always those who are new to the reflector and who are going to make errors. This reflector isn't set up in a manner which makes it easy to reply to posters of items. If I hit my "reply" but
It is not my intent to be insulting to you, Bob, but what places you in a position to admonish contest ops? I would agree that there are some bad apples. I believe that in general, contest ops are th
The only true measure of the value of something would be how many hours would you have worked in 1960 to purchase something compared to how many hours you'd have to work today to obtain a like device
I don't know if I'd want to do that mod since the 4CX-800's seem to be discontinued now as well, this according to the nice Slovenian/Australian fellow at the Emtron booth at Dayton. Dave Heil K8MN _
There's a very good likelihood that it isn't the display but the electrolytic caps on the little voltage regulator board. If you don't like the idea of changing the caps, T-T has the populated boards