Frequency Range-
The MICOR Receiver RF - I-F circuit boards generally follow this rule of thumb:
TLDXXX1 (132 - 142)
TLDXXX2 (142 - 150.8)
TLDXXX3 (150.8 - 162)
TLDXXX4 (162 - 174)

The XXX can be just about anything.  Commonly the XXX will be:
407 (8 channel)
527 (4 channel) [older]
827 (4 channel) [newer]
845 (Extender) [noise blanker]

The MICOR Exciter circuit boards generally follow this rule of thumb:
TLDXXX1 (132 - 150.8)
TLDXXX2 (150.8 - 174)

The XXX can be just about anything.  Commonly the XXX will be:
532 (VHF Basestation FM Exciter)
826 (VHF Mobile PM Exciter)
549 (UHF Basestation FM Exciter)

The MICOR PA circuit boards generally follow this rule of thumb:
TLDXXX2 (132 - 150.8)
TLDXXX3 (150.8 - 162)
TLDXXX4 (162 - 174)

The XXX can be just about anything.  Commonly the XXX will be: Continuous or intermittent duty depends on heatsink.
832 (45 Watt)
831 (60 Watt)
830 (90 Watt)
548 (110 Watt)

In general, the band of a MICOR can be determined by letter after the TL, as in TL'D'.
B = Low Band
C = 72 megs
D = High-Band
E = UHF

The Band-Pass Filters feeding the PA (High-Band):
TFD6111APR  127-158 MHz & 3 dB or 124-161 MHz & 10 dB -- this is the one for ham band.
TFD6112APR  145-182 MHz & 3 dB or 140-188 MHz & 10 dB -- this might work for top end of the ham band with a little bit of loss.
 
 
 
 

Copyright April 22 2002  Kevin Custer  W3KKC
All rights reserved.