BBARC 146.620 Site Alignment

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BBARC 146.620 McDonald Observatory Site Alignment:

VHF LOCAL REPEATER RECEIVER:
1. Monitor:
  1. Local Repeater transmitter output N connector.
  2. 146.620 MHZ.
2. Inject:
  1. Into Local Repeater input BNC connector.
  2. 146.020 MHZ.
  3. 1.0 KHZ audio at 3.5 KHZ deviation
  4. 146.2 HZ CTCSS at 0.5 KHZ deviation.
3. Adjust:
  1. Receiver coils.
4. Verify:
  1. -117 engage and -119 drop out.
VHF LOCAL REPEATER TRANSMITTER:
1. Monitor:
  1. Local Repeater transmitter output N connector.
  2. 146.620 MHZ.
2. Inject:
  1. Into Local Repeater Preamp input N connector.
  2. 146.020 MHZ.
  3. 1.0 KHZ audio at 3.5 KHZ deviation
  4. 146.2 HZ CTCSS at 0.5 KHZ deviation.
3. Adjust:
  1. KPG91D software - PROGRAM - TEST MODE - TX LOW POWER.
  2. Set level to ~126 for desired output.
4. Verify:
  1. ~25 watts.
VHF LOCAL REPEATER DUPLEXERS:
1. Monitor:
  1. Duplexer antenna connector.
  2. 146.620 MHZ.
2. Inject:
  1. Into Duplexer antenna connector.
  2. 146.020 MHZ.
  3. 1.0 KHZ audio at 3.5 KHZ deviation.
  4. 146.2 HZ CTCSS at 0.5 KHZ deviation.
3. Adjust:
  1. Duplexers.
4. Verify:
  1. 119 engage and -121 drop out.
  2. 17 watts.
VHF LOCAL REPEATER RECEIVER MAXIMUM DEVIATION:
1. Monitor:
  1. Local Repeater transmitter output N connector.
  2. 146.620 MHZ.
2. Inject:
  1. Into Local Repeater Preamp input N connector.
  2. 146.020 MHZ.
  3. 1.0 KHZ audio at 7.0 KHZ deviation
  4. 146.2 HZ CTCSS at 0.5 KHZ deviation.
3. Adjust:
  1. KPG91D software - PROGRAM - TEST MODE - MAX DEVIATION WIDE).
  2. Set level to ~150 for desired output.
4. Verify:
  1. 5~6.0 KHZ deviation maximum.
5. Finish:
  1. Remove injected signal.
VHF LOCAL REPEATER RECEIVER QT (CTCSS) DEVIATION:
1. Monitor:
  1. Local Repeater transmitter output N connector.
  2. 146.620 MHZ.
2. Inject:
  1. Nothing.
3. Adjust:
  1. KPG91D software - PROGRAM - TEST MODE - QT DEVIATION (WIDE).
  2. Set level to ~106 for desired output.
4. Verify:
  1. 0.5 KHZ of 146.2 HZ deviation.
VHF DUPLEXER OPERATION:
1. Monitor:
  1. Local Repeater Duplexer output UHF connector.
  2. 146.620 MHZ.
2. Inject:
  1. Into Local Repeater Duplexer output UHF connector.
  2. 146.020.
  3. 1.0 KHZ audio at 3.5 KHZ deviation
  4. 146.2 HZ CTCSS at 0.5 KHZ deviation.
3. Verify:
  1. -116 DBM engage, -119 DBM release.
  2. 22 watts output.
  3. No desense.
VHF LOCAL REPEATER RECEIVE AUDIO TO CONTROLLER:
1. Monitor:
  1. RMS volts AC.
  2. RLC-1 Controller C9 lead nearest to the DB9 connector.
2. Inject:
  1. Into Local Repeater Duplexer output UHF connector.
  2. 146.020.
  3. 1.0 KHZ audio at 3.5 KHZ deviation
  4. 146.2 HZ CTCSS at 0.5 KHZ deviation.
3. Adjust:
  1. KPG91D software - PROGRAM - TEST MODE - RA LEVEL.
  2. REPEAT = ON.
  3. You'll need to exit RA LEVEL to hear repeat audio.
  4. Set level to ~200 for desired output.
4. Verify:
  1. 0.707 VAC.
5. Monitor:
  1. RMS volts AC.
  2. RLC-1 Controller "MI" test point...
6. Adjust:
  1. RLC-1 Controller "MAIN REC" pot.
  2. Set level to desired output.
7. Verify:
  1. 0.707 VAC.
8. Finish:
  1. Exit TEST MODE.
VHF LOCAL REPEATER RECEIVE AUDIO TO UHF LINK RADIO TRANSMITTER:
1. Monitor:
  1. Link Radio antenna connector.
  2. 443.000 MHZ.
  3. RLC-1 Controller ""LO" test point.
2. Inject:
  1. Into Local Repeater Duplexer output UHF connector.
  2. 146.020.
  3. 1.0 KHZ audio at 3.5 KHZ deviation
  4. 146.2 HZ CTCSS at 0.5 KHZ deviation.
3. Adjust:
  1. RLC-1 Controller "LINK TRANS" pot.
  2. Set level to desired output.
4. Verify:
  1. 4.2 KHZ deviation.
  2. ~0.561 VAC.
UHF LINK RADIO RECEIVER:
1. Monitor:
  1. Local Repeater transmitter output N connector.
  2. 146.620 MHZ.
2. Inject:
  1. Into Link Radio antenna connector.
  2. 448.000 MHZ.
  3. 1.0 KHZ audio at 3.5 KHZ deviation
  4. 146.2 HZ CTCSS at 0.5 KHZ deviation.
3. Adjust:
  1. Whatever you can.
4. Verify:
  1. -119 engage and -121 drop out.
5. Monitor:
  1. RMS volts AC.
  2. RLC-1 Controller "LI" test point.
6. Adjust:
  1. RLC-1 Controller "LINK REC" pot.
7. Verify:
  1. 0.707 VAC.
8. Monitor:
  1. RLC-1 Controller "MO" test point.
9. Adjust:
  1. RLC-1 Controller "MAIN TRANS." pot.
10. Verify:
  1. 0.3535 VAC.
11. Monitor:
  1. Local Repeater transmitter output N connector.
  2. 146.620 MHZ.
12. Adjust:
  1. KPG91D software - PROGRAM - TEST MODE - TX AUDIO INPUT (TA).
  2. TX = ON.
  3. Set level to ~200 for desired output.
13. Verify:
  1. 4.2 KHZ deviation.
UHF LINK RADIO TRANSMITTER:
1. Monitor:
  1. Link Radio antenna connector.
  2. 443.000 MHZ.
2. Inject:
  1. Into Local Repeater Duplexer output UHF connector.
  2. 146.020 MHZ.
  3. 1.0 KHZ audio at 3.5 KHZ deviation
  4. 146.2 HZ CTCSS at 0.5 KHZ deviation.
3. Adjust:
  1. Whatever you can.
4. Verify:
  1. ~12 watts.
Go have a beer.


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