Terry -
The manufacturer is 'Heath Dynamics' no relation to "Heathkit". They
were one of several companies to make filters for the R-4C. A couple of
the others were Piezo Technology and Network Sciences, plus the latest
receivers had a Japanese made filter.
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs
<www.k4oah.com>
Terry Wilkin wrote:
I am looking into the filters on my R4C. I have 2 Heath Dynamics
filters mounted in the radio. Can anyone tell me the history of these
filters and the original use?
Thanks
Terry
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