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1. Replace the rear cover.
2. Replace the set into the case. Do not press the side buttons...
3. Replace and fully tighten the two larger screws in the battery adaptor plate.
4. Replace the speaker connector.
To re-align the radio:
1. Attach the RF connector / PSM to the facility connector.
2. Attach a charged battery, switch on and select the centre-frequency or most-
used channel.
To align the Rx...
1. Attach a SINAD meter to the L/S or E/P connector on test box / RSM.
2. Hold the mute open by depressing the top button on the side of the case.
3. Apply a signal and adjust the level to just start quieting on the Rx.
4. Adjust the two Rx cores for best sensitivity (anti-clockwise if originally on
450/460 MHz), reducing the input signal as necessary. Stagger-tune
accordingly if a wide freq spread is used.
5. Check the mute opens at ~-115dBm and the mute closes on removal of the
signal. (Note – the mute opening point is set is software).
Tx power
trimmer
To adjust the Tx power:
1. Key the transmitter and adjust the Tx trimmer for 2W RF output. Note that a
sharp-ended trimming tool is required for this operation.
Downloaded from: http://groups.yahoo.com/group/ht600e
Rx
tuning
coils
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