At 3/15/2007 20:13, you wrote: >The point I made was that Alinco, among many other manufacturers, simply >used a certain value in almost every radio built, rather than a selected >value, with the assumption that it would result in "enough" CTCSS deviation. >As I pointed out, that value more often than not resulted in CTCSS deviation >that was far above the appropriate or necessary level. However, as Bob >points out, a very few Alinco models have CTCSS deviation adjustment pots, >but those are the exception.
Guess I'm good at picking out the "exceptions". Don't recall for sure, but I think the DR-605's CTCSS level is adjustable too. Either way, the one I owned for a year or so before it was stolen didn't have excessive CTCSS deviation. It is unfortunate that the quality of Alinco's products has deteriorated from what was once quite respectable to utter junk. >Without exception, every Alinco radio I have tested- portable or mobile- has >had CTCSS deviation above 1000 Hz. That is far too high, and it usually >results in talk-off due to tone distortion. Actually, excessive CTCSS deviation is a poor yet effective way to mitigate CTCSS talk-off caused by lack of high-pass filtering in the mic amp circuitry, provided that the total deviation doesn't go much over 5 kHz. Bob NO6B
