b. A
djust the “Auto alignment- Upper Edge Balance” slider bar to yield flattest square wave on the transmitter
recovered
audio. Click the “Transmit” button to stop transmitting.
c. Repeat t
his for the “Auto alignment- Lower Edge Balance”. The Transmit Frequency is 450 MHz, the VCO tuning
voltage at TP201 should measure 0.8 +/-0.2 Vdc.
d. Select
“Auto alignment- Upper Edge Deviation” and click the “Transmit” button. Adjust the slider to yield 1350 +/-
50 Hz peak deviation. Here, an internal 600 Hz sine wave is generated.
Click the “Transmit” button to stop
transmitting.
e. Repeat the above procedure for
“Auto alignment- Lower edge Deviation”.
TX Power Adjustment
4) To set the
power, click “Alignment” tab and “Frequency/Power”. Select “High Power on repeater frequency” and click
the
“Transmit” button. Set the slider bar to desired power between 2 and 10 W.
5)
Click the “Transmit” button. Adjust RF Output capacitor C206 for maximum power. Look at the power supply current
draw and adjust to minimize current if possible. A non-metal tuning tool must be used to avoid incorrect tuning.
