S-Units and S-Meters

S-Units and S-Meters Origins The “S” in S-unit or S-meter stands for “(signal) Strength”. Originally used in the early 20th century as part of the RST reporting code, this was a subjective assessment of the received signal, based on the...
GB3KD

GB3KD

GB3KDs Zello gateway was mentioned at the AGM, to which someone retorted that “it’s not real radio!”. True, but it must have some good points because it is packed with radio amateurs! You can access it with the Zello app on a smartphone, or with one...
Cheep Radio

Cheep Radio

You can get a pack of 4 of these for £17. They are advertised as 400-470mhz 3km range, but are actually on pmr446. They are badged Retevis, Floureon and a few other names. How cheap radio has become! Since they are probably wideband SDR technology like most Chinese...

“Can you show me your waterfall?”

I got this article from the latest HRD Newsletter. One of the most common requests I’m getting at hamfests lately is from prospective customers asking – “Can you show me your waterfall?”  Initially, I quickly went to DM-780 and displayed its waterfall and this...
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