[ARC5] NFBM IF Chip and a question

[radio_man at wbsnet.org]

Les,

The MC3357 was used in skads of FM units by Midland and others.  Early
crystal control units, like 70-335, 525, and Snythesised 70-336 come to
mind. If you want to duplicate that design, just need a circuit for one of
those radios.
Midland of Canada sold 1000s of them, as well by Midland USA in rest of NA.

6M FM gear is really not that hard to find.  The Midland XTR, Syntech and
Syntech II stuff is "floating" all around.  There are programs out there
to enable one to program them into the 6M ham band, the 70-0351C comes to
mind and the variants of it.  Many, many have been sold on line for a
little of nothing due to 'retirement' from commercial service.  VERY well
built radios and with some mods you can get them up to a 'zillion'
channels.

You can contact Larry, WØOGH, <telegrapher at att.net> for more details, he
is very well versed with the Midland radios and mods.

73
Rod
KØEQH




>

 Hello Robert,
>
>>From an earlier posting you mentioned your interest in single chip FM
>> devices such as the MC3357, MC3359 and TDA7000.  I would be interested to
>> read your experiences in using these.  My interest in these is this:
>> simple 6m receivers or transceivers.  Homebrew gear for 6m is scarce, and
>> commercial gear is expensive.  6m is an interesting and often
>> underpopulated band.
>
> You may find me as "LNSmith" at OperaMail dot com.
>
> Thanks
>
> Les
>
>