DATE

SITE

PERSON/S

ACTION

21 August

Workshop

ZS2AAW

Netted the Uitenhage link crystals on all channels, receive and transmit.

Ch1:     Slipper              TX:  -6.8kHz                  RX:  -15mV Discr
Ch2:     Town                TX:  +13.5kHz                RX:  -12mV Discr

TX power set to 1.5W
Squelch set to tight:  2uV

Addeed 10n caps to the DTMF controller to bootup in the connected state (U10 pins 6-7) and to the channel select board to choose ch2 = 438.650 as the default (pin3-pin7)

13 August

Uitenhage 145.675

ZS2G, ZS2AAW

Remove the UHF link for workshop alignment as the TX frequency has drifted way off and no longer links to the 438.650 UHF Town repeater.

Remove the Dismantled WiFi equipment from the small building adjacent to the main site, as it is no longer required or used.  Digi was removed a long time ago.  Site has no mains power – all switched off.

3 August

Longmore 145.625

ZS2AAW

Installed 2 new 105Ah dixon Deep Cycle batteries

Rewired DC supply to breaker rail using 10mm² red black.

Fit new solar regulator ex GV.

Rewire battery leads using 16mm² stranded red black.

Repair burnt off solar panel wires by rejoining them. 2 of the 3 panels were O/C outside.

Replace VHF repeater - poor sensitivity, needed -70dBm or higher to open. Had to add LK5 to power up. Set TX power to 4 = 15W

Adjusted RX-disable delay in both UHF links to midway, to remove far end blip.

Baviaans link RF PA had permanent low power alarm. Adjusted alarm threshold to 1W. Set output back to 5W. All OK.

Replace Slipper link RF PA because of low output. Set low power alarm to 1W. Set output to 2W as before.

Check digi low power alarm, set to 1W. Set output to 5W. OK.  So all transmitters will give valid low power alarms if the output drops to 1W or less.

Set solar regulator battery type to LIQU, was GEL.

17 July

Longmore 145.625

ZS2AAW,ZS2GV

Digi power 5W. Sens 0.2uV, SWR good

431.025 link
SWR rev 0.4W, fwd 6W,
low fwd pwr alarm, wont clear.
Sensitivity 0.3uV. TX pwr 7W.

431.050 multi ch link.
SWR good,
TX Pwr only 1W maxed, can’t adjust.
Sensitivity 0.2uV
Remote ch00 not operating via thumbwheel or PIC.

Batteries both white, topped up with water....