Pete KE9OA wrote:
I hope I didn't sound too negative in my last
reply.............actually the 394 isn't a bad receiver.
For those who might be interested, I can redesign the
input filters, using a 3 branch chebychev topology. Just
shoot me the filter limits that are given in the service
manual, and I can do that. It will turn a fair receiver
into a very good receiver. I won't charge for this
service........there are enough of you out there that can
benefit from it!

Hi Pete, I'm interested. I have been intending to build an outboard set of
filters that would be diode switched under the control of the receiver, just
as the internal filters are controlled. Was thinking of doubling the number
of filters to narrow the individual passbands for even better protection
from overload. Would control this sub-band switching by comparison against
the voltage applied to the varactor. As I have never designed and built this
sort of thing before, I'd be happy to have your guidance. I'll e-mail you
off list with the frequencies.

Tom