GM300 UHF Wide vs Narrow Parts List

Monty · Post by **Monty** » Thu Nov 22, 2001 5:47 am

Hi:

Here is a repost of my
message concerning GM300's with the
Narrow vs Wide boards.

Although I will take my hat off to anyone
who would make the necessary changes, rest
assured its not for the Atypical person.

Most of these componets are on the BOTTOM
side of the board, and requires removal of
the board and excellent soldering skills

Here is a Parts List of a typical 438-470
Mhz GM300 Board ( Wide vs Narrow )

HLE8301A RF Board 438-470 Mhz 12.5Khz ( N )
HLE8300A RF Board 438-470 Mhz 25Khz ( W )

C57 2113740B29 ( N ) 15pf
C57 2113740B31 ( W ) 18pf
C58 2113740B25 ( N ) 10pf
C58 2113740B27 ( W ) 12pf
C59 2113740B29 ( N ) 15pf
C59 2113740B31 ( W ) 18pf

THESE FILTERS ARE VERY IMPORTANT

FL51 9180097D04 ( N )455Khz 6F 3.94
FL51 9180097D06 ( W )455Khz 6D 4.00
FL52 9180098D04 ( N )455Khz 4F 2.40
FL52 9180098D06 ( W )455Khz 4D 2.65

R61 0611077B07 ( N ) 22K
R61 0611077B19 ( W ) 68K
R62 0611077A26 ( N ) 10
R62 0611077B09 ( W ) 27K

R163 0611077B23 ( N ) 100K
R163 0611077B17 ( W ) 56K
R165 0611077A98 ( N ) 10K
R165 0611077B03 ( W ) 15K

R301 0611077B03 ( N ) 15K
R301 0611077A82 ( W ) 2.2K

These Filters are Expensive, but have a
Impact on Receive Performance.

Y51 9180022M03 ( N ) Filter 45.1 Mhz 12.5Khz
( $53.00 User / Approx $40.00 Wholesale )
Y51 9180022M02 ( W ) Filter 45.1 Mhz 25Khz
( $26.00 User / Approx $20.00 Wholesale )

Anyhow, depending on how well you wish the
raido to work, you can either live with the
Receiver and crank the Dev to max, or you
can go the professional route.

Monty

[ This Message was edited by: [email protected] on 2001-11-22 08:53 ]

[ This Message was edited by: [email protected] on 2001-11-22 08:58 ]