PT6500 User’s Manual
Page 26 of 30
◆2TONE signaling
The dealer can set this function by programming.
There are 4 systems of which the parameters can be set, e.g.: the duration of the first and the second
tone, the duration of the long tone and audio spacing, etc. Select the audio frequency（3106.0～
288.0hz step size 0.1hz）in “encoding sequence”, and whether the tones sent are long or two tones,
select 2TONE system in “2TONE List”, then select the correspondent 2TONE code cable in the “user’s
resolution” and transfer it with PTT. Select the audio frequency（3106.0～288.0hz step size 0.1hz）in
“decoding sequence”, and whether the tones received are long or two tones, then select the
correspondent decoding cable in the “user’s resolution”. The dealer may also set the “decoding
replay”.
◆ Transmit start/over signaling (PTT ID)
The identify signal of transmit start/over are used to maintain or disconnect some repeaters or phone
system.
“Transmit start” is used to connect routine repeaters and auxiliary facilities. If the ID transmitted is
matchable with that of the repeaters, the repeaters and auxiliary facilities are available.
“Transmit over” is used to disconnect routine repeaters and auxiliary facilities. If the ID transmitted is
matchable with that of the repeaters, the repeaters and auxiliary facilities are disconnected.
■ Problems and troubleshooting
No. Problems Solution
1 No display
after switched on.
A．Battery power may be insufficient. Recharge or replace the
battery pack.
B．The power switch may be broken, replace the switch.
C．CPU may be broken, replace the IC.
D．Regulator tube Q45 may be broken，replace the IC.
2
Phase locked loop
unlocked （ with “tick,
tick” ）
A．Phase locked loop Crystal Oscillator X1 may be broken,
replace it.
B．Oscillator tube may be broken, replace it.
C．Phase locked loop IC2 may be broken，replace the IC.
3 Cannot transmit.
A． The frequencies of both users are not the same, select the
same frequency channel again.
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