The main HF Station consists of a TEN-TEC Pegasus, Paragon and Titan linear. This station is now almost 20 years old. An FT1000 MP Mk 5 Field is mainly used for data transmissions. The total permissable power is 26 dBW. In addition, an Icom IC - 7000 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. Logger32, a superb multi-featured log book, is offered as a download by Bob K4CY. Bob incorporates the PSK31 software evolved and written by Peter, G3PLX, amongst others. Well done and thank you, gentlemen.The Station
The VHF/UHF Station is a TM-732E Dual band FM Tranceiver with an Icom IC 240 in use for the local VHF Cluster kindly provided by Keith, MU3EFB. Due to the geographical location of Guernsey, operation is mainly confined to the Sunday After News Net on 145.750, usually around 09:30 local time. The Guernsey UHF FM Repeater, GB3GU, is currently not available.
The home QTH is no longer on the coast. Rather, it is a small cottage in the Parish of St Martin's. The size of the plot means that HF aerials are of wire and usually bent to fit. Currently a contorted G5RV is in use but this is an ongoing investigation into the best solution.
The following details have been
included to show what was in use at the previous shack as it worked very
well for me. I still own the plot but as yet have not operated from
the site for some 5 years.
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.
Specifications
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
VSWR Measurements
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
10.125
2.7:1