Stew Perry Topband Challenge
Call: YU/S56A
Operator(s): S56A
Station: S56A
Class: Single Op LP
QTH: KN03PX
Operating Time (hrs): 5:30
Summary:
Total: QSOs = 93 Total Score = 304
Club:
Comments:
W8JI writes on Topband reflector: The use of coax cannot change the electrical
length of the antenna mode by way of the cable velocity factor. I read G3TXQ
measurements of coaxial dipoles and wrote EZNEC model with transmission line.
It shows good SWR with wires shorted by 2/3 velocity factor. So I used 27 m of
RG-58 shorted at the far end and fed by central conductor only. Grounding was
provided by second floor balcony fence at 10 m level while the end was at 4th
floor 15 m height. Lot of manmade noise pick-up from two big lights
underneath. SWR was 1:1 at 1,9 MHz and this simple antenna operated down to
1825 kHz with inbuilt TS-480 tuner. I intend to use it in a month time as
portable Z6 with my 10 m fiberglass mast on quiter tophill location!
I worked all the signals that were above the noise level reduced by TS-480
efficient NR2 remembering my first USA QSO with Stew, W1BB as YU1PCF in 1972!
73 & HNY de Mario, YU/S56A, N1YU
Posted using 3830 Score Submittal Forms at: http://www.hornucopia.com/3830score/
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