The only mechanical filters that I have seen problems with are the Japanese
units that you find in the JRC receivers. There is some sort of foam that
deteriorates over the years. I haven't seen a problem with Collins filters.
Receivers don't "wear out". With an older receiver, however, it's a good bet
that you will have to replace the electrolytic caps and replace all of the
carbon composition resistors that have drifted up in value over the years.
I took a different approach....................years ago, I also couldn't
affort the top end receivers so I learned how to design my own high
performance units. It was quite a learning experience, and it is a good way
to go. This experience has landed me a few high paying jobs in the field.
Give it a try!

Pete

"bcdlr" wrote in message
oups.com...
Guys that was a great discussion...
But I still have a question or two. Well actually a lot more than that
but we can't answer them all.
---
I know I'm not ready to build my own receiver, unless I went the micro
R2 route (I'm going to build one some day).
But that still doesn't solve my need for a ham band(s) receiver - to
use as a receiver and as a necessary piece of test equipment.
---
I know that the Drake 2b is good. But how easy (and cheap) is it to get
one? Are most "wore" out?
I've heard that a common ailment is that the mechanical filter will be
screwed up.
What are some receivers to look for (don't say the Collins - I don't
have enough money)?
BTW, got the EMRFD for Christmas. I like reading it but I have a lot to
learn...
Thanks,
Dan KB9JLO