The main HF Station consists of a TEN-TEC Pegasus, Paragon and Titan linear. The total permissable power is 26 dBW. In addition, an Icom IC - 745 is used for Portable or Mobile operation. Modes of operation are CW, RTTY, PSK31, FM and SSB. PSK31 has been one of the favourite modes in use in recent times. Zakanaka is the PSK31 software in use. This and Logger is offered as a download by Bob K4CY. Bob incorporates the PSK31 software evolved and written by Peter, G3PLX. Zakanaka interfaces with Logger, a logbook program also written and offered as freeware by Bob. Well done and thank you, gentlemen.
The VHF/UHF Station is a TM-732E Dual band FM Tranceiver with an Alinco DR-110 in use for Packet Radio. Due to the geographical location of Guernsey and my QTH being only 10M above sea level, operation is mainly confined to the Sunday After News Net on 145.750, usually around 09:45 local time. The Guernsey UHF FM Repeater, GB3GU, provides almost total island-wide coverage.
Antennae in general use are:
High Frequency 3 Element Home Built tri-bander Yagi, using
Cushcraft traps, for 10, 15 and 20.
"WHN Special", wire sloper at 45°, trapped 160m to
10m with two elevated radials.
Mast is a 40 ft Versatower.
HF Yagi and "WHN Special" layout
The base of the tower is around 100m from the high water mark of the Atlantic Ocean. Height of the top of the pole is 60ft. It is possible to winch it higher but.........!
The home brew Yagi is at a height of 33ft. The tip of one side of the director has just been blown off in the previous day's storm.
The 80m and 40m traps of the "WHN Special" can just be seen above and to the right of the Yagi. The 160m loading wire passes over the top of the pole and slopes down the other side as a short top-loading section. Opposing trapped radials run from the feed point at a height of 2.5m. VSWR is 1.2:1 on 1.830 and very acceptable on 80m, 40m and even 30m, 14m, 17m, 15m, 12m and 10m.
Height to top of mast 50 feet
Ground Pure sand. Very poor
Distance from Atlantic High Water mark 100 yards
Traps Unadilla/Reyco KW40 and KW80CW
Balun Unadilla/Reyco 160/10m 1:1
Wire 2.5mm pvc covered electrical solid core. RG8 coax is used to feed the antenna.
All sloping wires at approximately 45° to the vertical.
Initial setup, all three elements
Feed point to 40m trap 32ft 6ins
40m trap to 80m trap 24ft 3ins
80m trap to end of 160m end loading 40ft 3ins
Change to top loading section
Top of 80m trap to top of mast 9ft 3ins
End section 25ft
1.820 1.4:1 14.025 2.5:1
1.830 1.2:1 18.100 2.5:1
1.850 1.4:1 21.250 1.3:1
3.675 1.3:1 24.900 2.5:1
7.1 1.1:1 28.400 1:1
The Operator GU3WHN Title Page Guernsey Amateur Radio Index