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YT7MPB > TECH 13.07.21 16:22l 34 Lines 1772 Bytes #999 (0) @ WW
BID : 32713_YU7BPQ
Read: GUEST
Subj: Re: 'Data' modes bad for (Yaesu) radios?
Path: IW8PGT<I3XTY<I0OJJ<N6RME<YU7BPQ
Sent: 210713/1418Z 32713@YU7BPQ.#NSD.SRB.EU LinBPQ6.0.21
On 7/7/21 12:36, KF7PSM wrote:
> I don't know about wether the brand made a difference. Some radios if
> I recall were rated for instance to do full duty rtty where some
> had to be turned down so the finals did not overheat. There were
> probably some mods such as more heatsink and more fans to cool the
> finals off for some radios. I do recall that in most manuals I have
> read that when operating in AM the power had to be turned down. I've
> only been a ham for 11 years but have been interested since the 70's
> and have read a lot before I finally got a chance to enjoy the hobby.
> Question: Aren't most digital modes like WSPR, FT8 PSK Low power modes?
> What's truly amazing is how with some aided computational power we are
> able to snatch signals that are so weak by lowering the amount of
> spectrum we are looking at and therefore increasing signal to noise!
> 73 de KF7PSM
Thank you for response. I have initially mentioned Yaesu radios because
it is the brand of gear in my club. As I said, I even lowered the power
to some 25W and right now (Tue Jul 13, 1414 UTC) I have a great pactor 2
exchange with F3KT in France. No problem at all: FT-857 is not hot, fans
are working during TX, and Alinco PS shows cca 4 amp on TX (not hot too).
Nevertheless, earlier today the club's prez YU7WW commented (after
losing other arguments) that the "problem" is not just in the output
power, but also in "so frequent TX/RX cycles" in pactor, so they are
going to "screw up" TX/RX mechanism etc. It did not help when I told him
that such changeovers are a feature of modem operations, and that all
other hams who use them, work the same principle, but no one told that
he or she "broke" his/her radio, HI.
--
73 de Misko YT7MPB@YU7BPQ.#NSD.SRB.EU
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