Magnum
257
Documentation Project
CBTricks.com
TX Alignment
1. Insert a
mini jumper or diode on CON 1. 2. Supply 1
KHz, 16mV TX MOD Input at USB mode and adjust T27, T28,
T16, T29, T31 and T32 in order several times
for maximum TX power. 3. Set variable
power gain on front bezel to maximum and adjust L13, L14
and L16 so as RF power difference between A band channel 1 and
J band channel 40 to be minimum and then adjust RV9 (10KB) so as
RF power to be 23 Watts. 4. Adjust RV8
(100Kohm) at AM no modulation so that S-RF meter points +30 or a little
more. Adjust RV3 for 2KHz FM Dev at E band channel 20 and then
check if it is 1.5-2.5KHz at A band and J band. 5. Adjust RV5 at TX, no mod at Ham band for 0.4 - 0.9 FM deviation which is for RPT adjustment. |
Disclaimer: Although the greatest care has been taken while compiling these documents,
we cannot guarantee that the instructions will work on every radio presented.