hi Art,
Yes, that's a problem also. The early Drake "soupcan" filters in the
TR-3 & early TR-4's were/are notable for "going bad". They weren't made
by Drake, but by an outside provider, which changed as time progressed,
just like the filters. Lter filters don't seem to be as much of a
problem. Dunno abt other brands.
73,
Al, W8UT
www.boatanchors.org
www.hammarlund.info
"There is nothing -- absolutely nothing -- half so much
worth doing as simply messing about in boats"
Ratty, to Mole
On 9/18/2011 8:01 AM, Arthur Delibert wrote:
...what about crystal filters? We're all using crystal filters in our rigs
that are as old as the crystals that we're talking about replacing. Do the
crystals in the filters also drift over time, shifting the passband (or
distorting it, if the crystals in it don't all drift at the same rate)? Is the
drift just too small to worry about in the case of a filter?
Thanks for any insights.
Art Delibert
KB3FJO
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