Really Joe?? So how many rigs do you have with an "ISB" button? None of mine do. It does however have an AM button, as well as 4k+ (at -6dB) of SSB right out of the box. With 4k of audio, phonetics a
Okay, so how is that tested? White noise? Tones? Voice? Max power? Max allowed ALC? No ALC? Come on Michael, there's no way that would be anything but arbitrary, as a lot of the ARRL's "measurements"
You mean the way it *USED* to be (DC input)??? --SNIP-- However, if the FCC should happen to change the rules so that "power" is measured at the AC cord, then we might be a mite more circumspect as t
There are *NO* hardware mods to the transmit section of my rig (TS-950SDX) whatsoever. It will allow me to select its 6k IF filter for TX, and the 4k BW is SW limited in the DSP. If I had an external
ooooo... "AC Input". That would be interesting... Joe Hi Joe, Nope, actually at the line cord so that all power consumed counts! Just use an in line AC wattmeter. That might actually encourage some e
White noise is definitely worst-case, and with max allowed ALC it makes an ugly spectral plot. However, I'm not sure what you mean by "white noise with a peak-to-average ratio typical of voice...". W
Better read the rules again, Joe. Nowhere do they specify 3 kHz as "necessary BW", therefore *YOU* have chosen that value. Go read FCC Part 2, Subpart A, subparagraph 2.1 which *does* specify necessa
Thanks for the insight, Paul. I too was hoping this wouldn't happen, and in fact I said earlier I wasn't going to do this. However, when my two favorite modes are "trashed" and comments are made that
On the contrary, Joe. I can prove humans can tell the difference between certain letters, words, and sounds with 4k of audio that you can't with 2.5k. That has nothing to do with "broadcasting", eith
I have done some experimenting with marginal S/N ratios as well. Still, it's easier to copy signals with significant content in the 3-4 kHz range than those with only 300-2.5k. I will be the first to
That's what I was able to see, Tom. The IM products were much stronger with white noise & max ALC than with speech & no ALC or even speech with ALC. I did *NOT* do very comprehensive testing, in the
I agree with you in this case -- 300 to 3.3k (3 kHz total audio bandpass) isn't too bad. That's actually much better than most of you actually do on the HF Amateur bands (I hear 500-2.4k, or 1.9 kHz
Jim, I worked on military versions of those old, analog TDM multiplexing systems. One was called an "FCC-18", and was quite large. We had a more modern version of that on a second system I believe ma
Proclaiming that the bands are always packed all the time is a common error by those saying 4 or 6k of SSB is selfish & wasteful. One could make the argument that a band full of "You're 5-9....QRZ??"
Well Keith, I agree with you -- that's why I said I didn't want to do this -again- here before. However, it did prompt me to setup an experiment I've been meaning to do again, but more in depth this
I'm only going to say that to dismiss something solely because "it's always been that way" is a terribly closed minded way to look at something. I'm fully aware of why ~200-3.4k was chosen (as I ment
Way to go, Steve!! Doing something successfully that others say shouldn't or can't be done is something I thrive on!!! Glad to see somebody else around here with that gene... Joe, N3JI Not this one -
Why don't you ask these folks: http://www.wattsunlimited.com/ Surely one of you have disected this thing already. No, it's not a good supply for a "tube with handles", but it's pretty cool for what i
Since you mentioned that, why does the front of the SB-220 say "2KW LINEAR AMPLIFIER" if it was designed as a 1kW input amp? I've often wondered that... Joe, N3JI The SB220 transformer was designed f
I can get nearly 2.5kW PEP output measured on the VFD (predecessor to the WX0B PowerMaster) out of my Henry 3K-A with a pair of 3-500ZGs and almost 4kV on the anodes with 150W+ drive. Do I do that? N