Ch 2 VHF DX TV; possible in 2013 ?
With the introduction of Digital TV broadcasting in Australia;
Perth W.A. Analogue service will discontinue on 16 April 2013.
However the Melbourne Vic' transmission remains in service until planned termination on 10th Dec 2013.
Therfore with an "open" Ch 2 frequency allocation, and a good receiving set-up; it may be possible to receive East-West low-band VHF ABC TV during the April-December 2013 "window"
One would also hope that sunspot cycle #24 (which so far has been very dissapointing) would enhance propagation.
The graphic shows Adelaide TV received in Perth in 1960 - soon after a sunspot cycle peak ('57).
This is a yagi antenna which I "scaled" from 70MHz to 64.25MHz
using a design of Martin - DK7ZB (version 2)
For construction: I recycle, dismantled Australian Hills brand domestic TV aerials.
GAMMA MATCH ( Γ )
I presume the Gamma-Match gets its name from the similarity of the tuning bar and tap-off point,
to the Greek capital letter gamma ( Γ )
1) VHF Handbook for Radio Amateurs.Herb Brier W9EGQ & William Orr W6SAI 1984 pg 241
2) The Radio Handbook 14th Ed. Editors and Engineers (William Orr) 1956 pg 429
E&E gives capacitor value as 7pF per metre of wavelength (λ)
65 MHz Exciter (Test Oscillator)Used to excite Antenna and adjust gamma match tap point and capacitor for lowest VSWR.