Pete KE9OA wrote:
Hi Tom,
You can purchase the "low cost" Mechanical
Filters from Rockwell Filter Products Division, in Costa
Mesa, Ca. These would be the 526-8695-XXX series. Price,
including shipping is around 86USD. The Z in/out is 2k,
and no resonating capacitors are needed, as long as your
strays are below 30pF. These are the mechanical filters
that are used in the AOR3030, AOR7030, and the Palstar
R30, to name a few.
The -24dB spec is something I remember from my old HT-46
transmitter, so it doesn't need to be taken as gospel. A
good thing is to listen to how the transmitted signal
sounds.

Pete

Pete, that's about as much as I paid for the receiver I'm trying to improve!
A Radio Shack DX-394. I'm hoping to find something for a lot less. Probably
an unrealistic (no pun intended) expectation.

Tom