Tuesday, September 27, 2011

Pertama kali bekerja di 6M Band

Charlie VR2XMT
Pada Ahad 25 Sep 2011, 1305 UTC/2105 MST, tercatat satu lagi sejarah dalam hobi radio amatur saya apabila dapat bekerja di satu lagi band yang dikatakan "magic band" iaitu 6M band.  Stesen pertama 6M band yang dapat dihubungi adalah dari Hong Kong - Mr. Charlie VR2XMT di frekuensi 50.110 MHz. Sebelum ini, saya pernah beberapa kali bekerja dengan beliau di 10M band.

Berikut, sedikit info berkenaan 6M band yang dipetik dari  Wikipedia, the free encyclopedia.
The 6-meter band is a portion of the VHF radio spectrum allocated to amateur radio use. Although located in the lower portion of the VHF band, it nonetheless occasionally displays propagation mechanisms characteristic of the HF bands. This normally occurs close to sunspot maximum, when solar activity increases ionization levels in the upper atmosphere. During the last sunspot peak of 2005, worldwide 6-meter propagation occurred making 6-meter communications as good as or in some instances and locations, better than HF frequencies. The prevalence of HF characteristics on this VHF band has inspired amateur operators to dub it the "magic band".

In the northern hemisphere, activity peaks from May through early August, when regular sporadic E propagation enables long-distance contacts spanning up to 2,500 kilometres (1,600 mi) for single-hop propagation. Multiple-hop sporadic E propagation allows intercontinental communications at distances of up to 10,000 kilometres (6,200 mi). In the southern hemisphere, sporadic E propagation is most common from November through early February.