SB-855 TR-8400 Transmit Delay Time 1-25-82 PLL lockup time when switching from receive to transmit may be shortened for faster transmitter response. This change applies to units before serial number 1060455. On the PLL unit X50-1670-xx, check the values of R31 (390 ohm) and C47, C48 (6.8uf) near Q7 and Q8. If these component values differ, change as required. This will give approximately a 0.12 second delay, which should be satisfactory for practical use. However, if shorter delay is required, replace R31 with an 820 ohm resistor. This will yield an approximate 0.096 second turn-on delay. No adjustment is required after this part change. Note: When R31 is 820 ohms, CTCSS (Subtone) will be slightly distorted. Installation time for this procedure is 1/2 or less. JEB/sh (c) 121589TKC