Filter
Top Products
57
Problem Solution
You cannot transmit by pressing
[PTT].
You selected a frequency outside the
allowable range. Select a frequency within
the allowable transmit frequency range.
You selected a transmit offset that places the
transmit frequency outside the limit. Select a
proper offset direction or offset frequency.
Busy Chnnel Lockout is ON. Access Menu
No.20 (BCL) and select “OFF”.
TX inhibit is ON. Access Menu No.21
(TX.INH) and select “OFF”.
The battery pack voltage is too low to
transmit. Change or replace the battery.
Repeater cannot be accessed.
Wrong tone frequency is selected. Select a
proper repeater access tone.
Wrong offset direction is selected. Try other
offset directions.
DTMF tone cannot be transmitted.
DTMF Lock is ON. Access Menu No. 32
(DT.LOCK) and select “OFF”.
The transceiver returns to Receive
Mode after transmitting for a long
time.
The transmit time exceeded the programmed
TOT time. Access Menu No. 19 (TOT) to
select your desired transmit length. The
TOT cannot be turned OFF; it protects the
transceiver from thermal damage.
The Scan function does not resume
scanning after the transceiver detects
a signal.
You have selected “SEEK” for Menu
No. 14 (RESUME). Select either “TO”
(Time-Operated) or “CO” (Carrier-Operated)
for Menu No. 14 (RESUME).
OPERATION NOTICES
The transceiver has been designed and engineered to avoid possible hardware glitches.
However, you may notice the following symptoms when you operate the transceiver.
These symptoms are not malfunctions.
Receiving Signals In Cities: When you receive signals in cities, the receiver’s entire
antenna indicator may light up without receiving any strong signals. This happens when
the RF amplifier in the receiver is overloaded by nearby strong interference signals.
Transmitting: If you continuously transmit for an extended duration at high power, the
transceiver becomes warm. If you continue or repeatedly transmit before the transceiver
cools down, the thermal protector gradually decreases the output power to 1 W.
Internal Beats: On some spots of the frequency, the S meter moves without receiving
any signals or you cannot receive any signals. This is inevitable when you use super-
heterodyne receivers. If this happens, access Menu No. 10 (B.SHIFT) and select “ON”.
However, the following Internal Beat Frequencies cannot be eliminated.
TH-K20A/E: 152.69375/ 152.695/ 152.7/ 152.705/152.70625/ 153.59375/ 153.595/ 153.6/ 153.605/ 153.60625/
172.79375/ 172.795/ 172.8/ 172.805/ 172.80625 (MHz)
TH-K40A/E: 403.19375/ 403.195/ 403.2/ 403.205/ 403.20625/ 422.39375/ 422.395/ 422.4/ 422.405/ 422.40625/
441.59375/ 441.595/ 441.6/ 441.605/ 441.60625/ 460.79375/ 460.795/ 460.8/ 460.805/ 460.80625 (MHz)