97.307(a): No amateur station transmission shall occupy more bandwidth than necessary for the information rate and emission type being transmitted, in accordance with good amateur practice. 97.307(b)
Actually for your info, poorly design ALC circuit (in the radio) can cause splatter in themselves.. Their are a lot of radio's that have serious overshoot & ALC IMD that allow large peaks to be trans
? The best way to avoid ALC overshoot is to set the mic. gain for minimal ALC indication. - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measures. end
Richard actually the cleanest radio that I know of is the FT-102 yaesu with 3 6164B tubes ... I think QST product review tested it at -40 IMD at 100 watts out ........ John
Not sure what qst .. I think 1983 they tested the FT-102. I will have to dig out all my old issues. Their are other rigs that have low IMD ...the Kenwood TS-930 , 940, 950SDX... FT-1000D , FT-767 , 1
The FT-102 was reviewed in QST - October of 1983. John has a pretty good memory. 3rd and 5th order imd was down 40 db. A real sleeper with regard to distortion in rigs with 12 volt finals is the Heat
I can confirm the FT102 is fairly good on IMD - at least, mine is. It's got RF NFB on the 6146Bs. For no reason that I can explain, it's also very good on phase noise, too, although it does have a lo
3rd down 40db plus 5th down 40db does not equal ­40db total IMD, which would still be over the 40db limit.. Clever. Another solution is switch the 12VDC at c. 100kHz, and use a FWD to produce 24