Hey... I had one of those once ... during my SWL days. I thought it might improve my long (i.e., random) wire receiver antenna, but I could never see any improvement no matter how I set it. OK, so if
Very interesting, I would have thought there would be some capacitance or inductance or something between the 2 coils being so close together. Please remind me what you did to weather seal the toroid
Well, if you consummate the transaction, I hope he buys the beer! -- K8JHR -- I HAVE NO COMMERCIAL INTEREST IN THE COMPANY IN THAT LINK, in fact it is the biggest competitor to my own company, but it
As a new ham, I sometimes tried checking into a net using only 5 watts. I would get wise after Net Control said I had a weak signal. After adjusting it, they would say something metaphysical about "t
I have long been intrigued by the photo of the humongous dual knife switch displayed on that site... it would be effective at isolating the wire from the rig, but how would one protect it from lightn
ER... um ... I think I can tell you. ;-) Spiderbeam masts! Which are just about the best available for this sort of thing. Not only are they pretty tough, but they come in ridiculously LONG models -
Interesting answers... I am wary of any solution that leaves transmission lines loose and ungrounded. I have seen how lightning can arc from a disconnected cable across a desk and zap a radio. It my
Wade... you need someone to blog about how effective that SWR Spray is, just to give it greater credibility. You know... if you read it on the web, it must be true. As it is probably not mentioned on
How does the electrolytic content of your water compare with that of natural, NE US acid rain? == K8JHR == it's difficult to see how the water could change the copper loss, but you can see how it mig
I think today's password should be... "electrolytic." Rainwater might have some salts and other stuff in it... and I am sure the "wetting agents" under discussion contain various stuff that change th
Hmmm... I guess I am the odd man out... again. I thought all these little losses are cumulative and can add up. Sorta like getting consecutive sentences, instead of running concurrently -- it is not
Radials really only apply to quarter-wave verticals. Well... er... um... not really. You want a nice set of radials under an inverted-L antenna... and other designs, also. Bill Orr W6SAI (sk) says th
Hey... is that a TT 238 Tuner on the front cover of Joel Hallas's new book, *Understanding Your Antenna Analyzer* ??? Always fun to see TT gear illustrating the latest publications. -- K8JHR -- . ___
Sniff... sniff... Just beautiful ! Sniff... Heavy Sigh... ;-) Happy trails, JH. (Oh... and I just ordered the book!) -- K8JRH -- On 8/4/2013 7:44 PM, Joel Hallas wrote: You bet, along with a TT Centa
Ah... yes. And a slightly younger operator as well! Happy days, JH. -- K8JHR -- BTW, a picture of the all TT station (before the K3) is on QRZ. ___________________________________________ ___________
Yes... and also remember some drawings are made from the front view and others from the back view, so you really gotta look closely. I do loads of microphone projects, and I was totally chagrined bec
On 8/6/2013 5:38 AM, Rick - DJ0IP / NJ0IP wrote: Nice simple circuit Lee. It certainly works for SSB and CW with a QSK amp, but I would think the slow relays in the old 30L1 and in the AL811 would no
A secondary question, does anyone have any experience with the external audio DSP speakers? Do they help with power line noise? _________________________________________ Only a little. I have used s
Also, half-wave verticals have the virtue of putting more radiation at low angles as compared to a quarter-wave vertical. That is an interesting tidbit. And I certainly agree with Rick -- when you're
There is a drawing of that specific setup in the Centurion user manual. -- K8JHR -- The key is connected to the amp {not the radio} and the keying circuit in the amp then keys the radio upon key clos