Eric Lemmon wrote:
> Bob,
>
> Those filters are the standard 16K0F3E filters, for 25 kHz channels. The
> most recent UHF Micor manual notes that part numbers 4884755E01, E02, and
> E03 can all be replaced by 4884755E01. It appears that whoever crystalled
> that radio took the easy way out, and did not install a narrow-band IF
> filter kit. To the best of my knowledge, Motorola did not offer such a kit
> for the Micor, although several aftermarket companies and crystal houses did
> produce such kits for the Micor and for other radios of that vintage.
> Communication Specialists offers a Micor narrow-band kit, even today:
>
>
> 73, Eric Lemmon WB6FLY
>
They not only would not have needed the narrowband filters at the time,
they actually probably would have caused problems. Even just a few years
ago, the 12.5 splinter channels were in a 'low-power industrial'
sub-service, and was normal bandwidth. Problem here is that a Micor
would not have been legal, since the power limit for LPI channels was
2W. (I have an LPI Maxar-80 I use for a GMRS control station.)
There probably were some other means of licensing the splinters that
didn't have the power restriction. I know there were also geographic
restrictions.
