Radio Alignment Procedures
29
6. Left-click the PTT Tone: Low button.
7. Left-click the PTT Toggle button on the screen to enable transmission. The 
screen indicates whether the radio is transmitting. Wait approximately 5 
seconds until the voltage shown on R-2670, or the deviation shown on the 
8901_ analyzer, stabilizes. 
8. Measure and record the ac voltage value from the R-2670 analyzer or the 
deviation value from the 8901_ series analyzer.
9. Left-click the PTT Tone: High button.
10. Adjust the softpot value until the measured deviation/voltage, when using the 
high tone, is within +/- 1.5% of the value observed when using the low tone.
11. Repeat the above process for all frequencies.
12. Left-click the Program All button on the screen to dekey the radio and save 
the tuned values.
13. Left-click the Close button on the screen to return to the Transmitter 
Alignments menu.
Figure 10.  Transmit Deviation Balance Alignment Screen