[ARC5] [armyradios] BC-221 Coupling

[Bill Cromwell]

On Wed, 2012-11-14 at 20:21 -0500, Jay Coward wrote:
> 
>  But then if you have one that has no cal book and  you can "cal" it
>  against another with a cal book for the frequencies  of interest then
>  maybe you might find that as a useful experimenting  platform.    I've
>  always thought the LM could make a really hot regen  rx with the
>  proper mods. When the 80 and 40 bands are long and quiet  I've hooked
>  the long wire to the LM and had very good clear copy,  although low
>  audio.  Jay 

Hi Jay,

A missing cal book is no reason to chop a LM or 221. A new cal book can
be made fairly easily with the help of a spread sheet and a couple of
cups of coffee. A new cal book could be made before that. In fact the
originals were made with a personal computer to help. If they could do
it in the 1930s it can probably still be done.

There are some fellows who built regens and direct conversion receivers
based on an old LM or 221. The way you described using yours was about
the same as a DC receiver but not optimized for that.

My heterodyne frequency meters shall remain on duty as heterodyne
frequency meters until my heirs deal with them some day. I have looked
for LMs and 221s that are "beyond repair" to use for parts in other
projects. I haven't found any that can't be repaired. Anybody? That's a
challenge. Send your "beyond repair" LM or 221 here for 'burial'.

73,

Bill  KU8H