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BBARC 146.920 Sibley Ranch Maintenance:
NEED:
ADM Modules.
Improve Link Radio Transmit Audio high frequency response.
Flex conduit on Solar Panel wiring.
- LOCAL REPEATER:
- Removed G.E. MastrII repeater.
- Installed Kenwood TKR-750K2 repeater, serial #81100467.
- LINK RADIO:
- Removed Vertex FTL-7011.
- Installed Kenwood TK-8180K2, serial #9110003.
- CONTROLLER:
- Removed Link Communications RLC-1, serial #1471.
- Installed Link Communications RLC-1 Rev E, serial #1327, 10 turn pots installed.
- POWER:
- Replaced 3 regular deep cycles batteries.
- Installed new voltmeter.
- Replaced single 12 guage pair between the Charge Controller and the Repeater Cabinet with two 10 guage pairs.
- Replaced sinlge 14 guage pair between the Charge Controller and the Battery Stack with a single 10 guage pair.
- LOCAL REPEATER:
- No power output. Traced problem to an open jumper between the P.A. Final Board and the Output Filter. This is the usual place where we get solder cracks. Replaced jumper with 12 guage stranded wire.
- LINK RADIO:
- Increased power from 2 to 10 watts. We still have transmitter high frequency roll-off and dual PL transmit on the Link Transmitter but I think it is a design problem.
- SITE:
- POWER:
- Batteries down to 11.8 Vdc. New panel wiring open and some of it is missing.
- Added two panels to new panel rack to replace the two panels that were lightning damaged on 21 August 2005 and 22 June 2003.
- Replaced all wiring between the new panel rack and the Charge Controller.
- Replaced Charge Controller model SCI1-12, serial 990089 with MorningStar model #SS-20L-12V, serial #05382711 but I don't think the original Charge Controller had failed.
- LOCAL REPEATER:
- Cut C-16 at H-12 to eliminate local Repeat Audio from mixing with the audio from the Controller.
- LINK RADIO:
- Replaced Vertex FTL-7011 #2M130011 with #01010050 but there is probably nothing wrong with the original radio.
- SITE:
- Full alignment. 3.5 + 0.5 in for 4.2 out.
- Added ground wiring inside Radio Box, Charge Controller, and between new panel rack and battery box.
- 1 Year, 9 months since last trip.
- POWER:
- One of the two remaining Siemens M55 panels was shorted and pulled the rest of the panels down. Removed.
- Charge Controller dead and case bulging. Replaced ASC #Q402441767 with Specialty Concepts SCI1-12 #990089.
- Replaced 3 older deep cycle batteries with one new and two not so older batteries. The Ma Bell batteries were fine. No water needed.
- LOCAL REPEATER:
- Power Amplifier only putting out ~2.5 watts. Replaced the mobile type power supply with a spare.
- CONTROLLER:
- Internal GMA 0.5 amp fuse blown. Replaced.
- LINK RADIO:
- 25 amp fuse in + lead of power cable open. Replaced with 20 amp fuse.
- SITE:
- Full alignment. 3.5 + 0.5 in for 4.5 out.
- Local Repeater: -116 DBM on, -119 DBM off, 20 watts into PolyPhaser jumper.
- Link Radio: -116 DBM on, -118 DBM off, 7 watts into PolyPhaser jumper.
- LOCAL REPEATER:
- LINK RADIO:
- Changed frequencies
- From: 443R000, 448T000, 0.0 PL
- To: 448R000, 443T000, 146.2 PL
- To coincide with the Hub Link Radio move to McDonald Observatory.
- Moved Link Radio antenna to point toward McDonald Observatory.
- The Control Unit in the Link Radio is an original, not an 1A unit.
- POWER:
- Added water to batteries. Used just over 2 gallons.
- The voltmeter reads too high.
- 12.82 Vdc at 11:00 A.M. cloudy.
- Left funnel and <1 gallon water.
- SITE:
- SITE:
- Lightning damage to one new and one old solar panel.
- Replaced failed charge controller.
- Reinstalled repaired repeater, link radio, and controller.
- SITE: Major lightning strike.
- REPEATER:
- P.A. first transistor blown. Replaced P.A.
- Receiver RUS signal locked low. Replaced receiver.
- Added ST-100 PL encoder to transmitter.
- CONTROLLER: RLC-1 internal 0.5 amp GMA fuse open. replaced.
- LINK RADIO: D1015 (Q9000534) surge arrester shorted. Repl. Fuses blown. Repl.
- REPEATER: Intermittent power loss. Seemed to be temperature dependant.
- Resoldered P.A. power regulator transistor. Problem finally traced to an intermittent coax adapter between the P.A. output and the UHF feed through on the back panel to the left of the P.A. Removed adapters and ran the coax directly to the output of the P.A.
- POWER: Charge controller fried. Locked in charge mode and no spare on-hand.
- REPEATER: Receiving Paging Tones still occurring most mornings:
- Replaced repeater with another Mastr II that has an 146.2 PL decoder board installed.
- 19 watts, -112 dB into antenna connector.
- -116 dB into receiver connector.
- LINK RADIO: Adjusted frequency.
- SITE:
- Full audio alignment.
- Added permanent fix to the clamps holding the top of the repeater cabinet to the tower legs.
- REPEATER: Receiving Paging Tones most mornings:
- Installed High Side Injection Oscillator/Multiplier board and ICM.
- Installed UHS Preamp. Left it disconnected due to desense.
- Some desense noted. It's internal to the repeater and not caused by the duplexer.
- SITE:
- Hose clamps holding the top of the repeater cabinet to the tower legs broken. Did temporary fix.
- POWER:
- Added 2 M55 solar panels and the mount that Kenny made.
- Replaced charge controller.
- Installed 3 deep cycle batteries.
- POWER:
- 12.80 VDC @ 2:00 PM cloudy.
- 1.25 amps charge current.
- RADIO:
- Removed packet digipeater.
- Installed 146.920 repeater and link system.
- Repeater = 15.6 watts @ 110 db receive.
- Link = 3 watts, 0.5 refl.
- POWER:
- 13.50 VDC @ 4:00 PM partly cloudy.
- 12.58 VDC with charger disconnected.
- 11.77 VDC TX with charger disconnected.
- RADIO:
- Replaced receiver preselector and oscillator board. 0.4 uV.
- CONTROLLER:
- Looking good. 4800 baud N81.
- POWER:
- 12.92 vdc @ 1:00 P.M. Looking good. Still no water needed.
- RADIO:
- 20 watts, 1.5 refl, 3.5 Khz dev, 1.2 uv.
- Changed xtals from 145.010 to 144.390.
- Swapped RX oscillator board and ICOM from the original high side injection to low side injection boards.
- RX still weak.
- CONTROLLER:
- Replaced MFJ with KPC to change call and make the parameters remotely changeable. 4800 baud N81.
- POWER:
- 12.48 vdc RX, 12.2 vdc TX at arrival. 6 amps charge current at 12:19 P.M. BBARC panels blown about 15' away but system still charging. Removed BBARC panels (panels bad and rack broken). Sunny at end. Batteries good and no water added. 1.5 gallons available to use.
- RADIO:
- 27.5 watts, 1.5 refl. 3.5 khz dev, 0.9 uv. Adjusted RX but still about 0.9 uV.
- POWER:
- 13.8 vdc and controller cycling at 3 PM. Batteries only at 12.00 in sunlight. Replaced with 6 batteries like 146.620. West large solar panel wires off. Re-soldered.
- POWER:
- 12.79 vdc at 3 PM sunny. Added 3, 46" X 15" panels. 2.10 amps shorted. Panels total 7.5 Amps @ 2 PM sunny. Replaced charge Controller with ASC-12/8 serial #02949442.
- RADIO:
- POWER:
- Batts down to 10.4 vdc. Watered batteries.
- RADIO:
- Spurs on 146.010 because of low batteries. Max power 50 watts. Set to 12.5 watts which should be 25 watts at full battery power.
- CONTROLLER:
- Added W2RRY-2 back on ROUTES.
- RADIO:
- Something chewed through coax. Fashioned temporary jumper.
- CONTROLLER:
- Turned of W2RRY-2 from ROUTES. Low batteries caused by excessive use forwarding mail.
- POWER:
- RADIO:
- TX off freq. Changed TX ICOM. Increased output power from 10 to 98 watts.
- POWER:
- 12.5 vdc at 3 PM. Added 6 solar panels. Panel current 5.8 Amps at 3:00 PM. Batteries on arrival 11.9 Vdc.
- RADIO:
- 18 watts, 0.1 watts reflect.
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