HF Active Loop Antenna V4 vs discontinued HF Active Loop Antenna V2
I'm Gaspar, EA6AMM, a happy owner of a discontinued CCW HF Active Loop Antenna V2. I'm almost exclusively using it for HF amateur bands from 160 to 10 m monitoring. (IARUMS)
I would like to know how does the new CCW Active Loop Antenna V4 compares and performs vs the discontinued CCW HF Active loop V2 in terms of gain, for the same use (160 to 10 m monitoring). I mean, would I be able to pick more low stations or more DX stations in those bands than with the discontinued HF Active Loop Antenna V2 if installed at the same height?. I'd mount the V4 vertically (omnidirectional) as not interested on NVIS signals
A few question about the V4:
When mounted vertically, I've understood, from your explanations in the video, that the antenna's pattern is omnidirectional and has two sharp nulls for interference rejection. Would these sharp nulls affect the signals I want to receive in the same directions of the nulls? Would it be useful / necessary to mount it with a rotator?.
I would mount the V4 pointing to 0º to 30º and I unfrotunatelly suffer from QRM (electronic variator for an electric engine, affecting HAM HF bands) coming ffrom the 120º aprox. Would the nulls reject that QRM with the antenna pointing to 0º to 30º?
Could it be also used as RX antenna for my HF transceiver (not for TX!; my transceiver has an RX connector and a switch to select it as RX ANT)?
Thank you very much!
73, Gaspar, EA6AMM
Could it be also used as RX antenna for my HF transceiver (not for TX!; myI would be interested to know which Transceiver you have. Even my old TS-180 could easily be modified to provide that option but unfortunately there are very few that have that facility these days.
transceiver has an RX connector and a switch to select it as RX ANT)?
The main improvement will be in the depth of the nulls in the radiation pattern.
Using two parallel loops does give a sharp deep null compared to a single wire design.
I suggest that you align the antenna to null out your source of interference at 120 degrees.
The width of each main lobe is very wide, typically 120 degrees or more so it will still cover your target area of 0 to 30 degrees.
The v4 loop can be used as a receive antenna with a transceiver.
It is designed to be used close say within 3 m of a transmit antenna without damage.
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