I haven't looked at an MP yet, but here are the results on a 1000(D)... The problem: Good engineering dictates never running a square rise and fall waveform into a crystal filter. The square rise-and
Hi George, and off at I'm interested in what model HP analyzer you used. What does a unkeyed carrier look like on the spectrum analyzer you used, set to the same level as the radios? What analyzer ar
I forgot to say the resistor goes between the collector and the base of the transistor. The transistor turns on slowly because the 10uF capacitor charges through the 1.5k resistor. The stage turns o
sharp AGC is a problem, but if the radio has overload anywhere before the narrow filter you are in deep trouble with far more than clicks and it would take more than AGC to fix it. The receiver will
Hi All, I certainly believe George when he says this is what his HP141T ( i'm not sure what plug-in he has) measured, but I don't believe the data is actually good because: 1.) The radios I have meas
First this: DJ6RX reports an additional diode to block negative voltage from the transistor was needed in his, but mine seems to not require that. I'm sure either he or I will post something when we
We don't have to do waveshaping with a single pole R/C filter. It's easy to do it with multi-pole waveshaping. 73, Tom W8JI W8JI@contesting.com -- CQ-Contest on WWW: http://lists.contesting.com/_cq-
Hi Bob, The band was active and there were good signals from Europe. Unfortunately, as in most SSB contests, many US operators with poor receiving conditions (they couldn't even hear the locals calli
Hi Tom, I just went through that with the FCC. They will NOT allow an external PA even if it "only works with one rig". They were very clear about that with me. It would have to be internal, or face
I was going to respond with a nice article about using my stacked push-pull Razor beams to generate my own propagation, but then I looked at the date. Since this not the first, I assume you are seri
Without knowing what the person at the other end is doing, and how his S meter works, it is impossible to say why the change is reported as more than the power change Tony. Most S meters are pretty
Hi Larry, Respectfully, the ionosphere is an extremely linear media. If it wasn't, HF would be useless with a mix of all sorts of signals. The signal, if it is below the MUF of a path, is ALWAYS refr
I admit I am not able to comprehend what you are saying. A visit to an suitable institution might help me understand more about things like ionospheric heating and Razor beams....but I dislike the s
Hi Yuri, When we re-quote someone, let's make some attempt to do it accurately. Clearly that is not what you stated, and it certainly is not how I responded. Let's not play "you said this, I said tha
Hi Tony, That is easy to prove Tony, and because it is easy to measure and prove it is also well documented the ionosphere is very linear. The entire purpose of HAARP was an attempt to create non-lin
Did you schedules always start at the same time, or were they random times? Why didn't the local broadcast stations, with megawatts of ERP, keep the path open? 73, Tom W8JI W8JI@contesting.com -- CQ
Hi Peter, I originally thought you were talking about the ionosphere, but now I see you are talking about troposphere. It was common with repeaters I took care of to have enhanced longrange propagati
I have a suggestion. Why not take this thread to the Internet Usenet Newsgroup rec.radio.amateur.antenna There are quite a few experts on that newsgroup, and it would be an interesting topic. When th
Yuri, This is really out of place for a reflector, but in that entire text you posted there is NOT a single statement where I said skew paths do not exist, where I called YOU a name, or where I said
Kenwood also supported the reduction is CW speed, which in the year after implementation (when the effect on growth should be its largest) has given us a whopping new ~1% growth. They supported the