[1000mp] Collins mech filter proper installation question

[Joe Subich, K4IK]

Based on Graeme Jackson's comments, it appears that the resistors 
belong on the output side of the filter.  They form an attenuator 
to increase the insertion level of the Collins filter assemblies  
to match that of the optional (2.0 KHz and 500 Hz) crystal filters. 
There is a similar attenuator following the 6 KHz ceramic (AM) 
filter permanently installed on the IF board (CF2002). 

73, 

   ... Joe, K4IK 
 
 

> -----Original Message-----
> From: 1000mp-bounces at mailman.qth.net 
> [mailto:1000mp-bounces at mailman.qth.net] On Behalf Of Cliff Buttschardt
> Sent: Friday, June 03, 2005 12:45 PM
> To: 1000mp at mailman.qth.net
> Subject: [1000mp] Collins mech filter proper installation question
> 
> 
> There appears to be two ways that the Collins mechanical
> filter can be installed in the 1000MP and/or other 1000's.
> One way would place the four resistors facing the chassis
> side and the other with the resistors facing the center
> of the radio.  The filter might be bilateral but the PC
> board connections are not.  Please tell me which is correct!
> Cliff K7RR