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Transmitter:::::::: RPT-10
make sure the repeater mode is in the non rpt
mode.....
1 Connect a mic to the mic jack and depress the
PTT
2 connect VTVM for dc between TP-2 and ground, and adjust
L102, L103,L104 and L105 sequentially for maximum reading, Repeater
several times
3 connect VTVM between TP-4 and ground and adjust L106 and L10
alternately for maximum reading
4 connect VTVM between TP-5 and ground, and Adjust L106, L107,
L108 and L109 alternately for maximum reading.
5 connect VTVM between TP-7 and ground, and adjust L110
and L111 alternately for maximum reading.
6 connect the VTVM between the TP-9 and ground, and adjust
L112 and L113 alternately for maximum reading
7 adjust C156 and C160 alternately for maximum response on the
wattmeter.
8 Repeater Steps 6 and 7
9 set service monitor to the exact transmit frequency and set
the transmit freq. by adjusting C21
10 Connect the 1000Hz audio output of the tone generator
between pins 1 and 4(ground) of the mic jack and setup the FM deviation
meter.
11 Adjust the audio level to 30mV
12 Key the Transmitter and adjust the Instantaneous dev.
control IDC pot R142 to obtain +/- 5.5KHz dev
13 Reduce audio output of the tone generator to 5mV and
key the Transmitter. Verify that the Dev is 3kHz Min. If dev is less, low
audio gain is indicated. Check the voltage levels in the audio
circuit.
14 Increase the audio level 20dB and key the transmitter.
Check that the Dev. does not exceed +/- 4.5 to 5 kHz.
Receiver::
RPT-10
Prior to alignment of the receiver, make sure RPT
switch is in NON-Repeater mode
1 set squelch control for maximum noise (full
counterclockwise) and the volume control to mid-position.
2 connect the dc volt meter to TP-1. Adjust L113
and L114 for maximum voltage reading
3 Connect the dc voltmeter to TP-2 and adjust L115
and L116 for maximum voltage reading
4 Set communications monitor (sig gen function) to
the proper input frequency (unpopulated) and set the output to
ZERO.
5 connect an AC voltmeter between Pins 5 and 8 of
the control receptacle with an 8ohm, 2 watt dummy load connect in
parallel
6 adjust L107, L108, L104, and L105 in that order,
for maximum speaker output noise level as indicated on the ac
voltmeter.
7 connect a 25-0-25 microammeter between tpin6 of
J10 and ground, Pin 5
8 adjust L105 for Zero center reading on the
microammeter. Verify that the speaker output voltmeter reading does not
change.
9 Apply a modulated RF input signal approx. 12 dB
SINAD
10 Adjust L105 and L104 for maximum SINAD
Sensitivity.
11 Reduce the RF input to ZERO
12 Adjust L108 for ZERO reading on the
microammeter.
13 set the cavity core to mid-position
14 adjust the unmodulated RF input signal for 10dB
QS
15 Adjust L101, L102, L103 and the three
adjustments on the receiver cavity in that order, for minimum noise level
output. The RF signal may need to be reduced to keep the receiver at the 10dB
quieting sensitivity level.
Following the completion of the receiver
alignment, re-check the 20dB quieting and squelch sensitivities, and replace the
cover(s).
Im trying to get the TP and parts placement scanned for you.... and maybe
we can post this at the RPTIP web site when all complete..
Brent KF4TNP
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