QRP HF Antenna, Portable Full Band Tuned Antenna InterferenceFast Set Up forReception

At first i was not sure if this antenna was performing at all. I used it in some QRP activations and it seemed to be...just ok. Once I compared it to a mini whip and a EFHW, I realized that it was actually a very good antenna. With a single counterpoise or true ground its even better. As an RX-only antenna it surpassed expectations and was found to have an even greater range than documented. And since no power injectors are needed...this really is a keeper. Its been in everyday use since and has been more or less flawless.My only complaint...and this has nothing to do with the antenna...is that its not quite light enough to mount directly to an SDR dongle. Apart from that...its perfect.

I did not like the rather stupid technical explanation of the controls by the vendor.I did not disassemble however removed end caps. It is a well built unit shielded and it looks like the inductor rotator may be further shielded inside with ferrite . Its an LC matcher. The capacitor measured 66-607 pf at 1-7 on dial. The inductor appears to be about 40uh at the 300 and then decreases down to 3.8 on dial.Cap is in parallel and inductor in series typical LC match. Hopes this helps. SWR meter showed low SWR as advertised. I expect normal behavior of the match. The random wire I have no tested.

Very finicky, but it does do what is described. If you want high quality results seek elsewhere. If you want a quick solution this will stand in until you find one.

The images are an analysis of this antenna vs my G5RV. As it shows, on one setting, it has a low, long range with usable SWR. This was 3.5-30MHz. The G5RV shows expected resonance at multiple bands, so I'm not sure how this unit is showing such a low SWR for such a long range of frequencies. This changes to sharp dips when the upper switch is used, showing more expected narrow ranges, which can be tuned in. No switch however shows any usable frequency above about 18MHz.

I was unable to get this antenna to tune well enough to use it. It fell apart while trying to use it.

The antenna is an LC tuned circuit with a whip antenna attached to it. It works OK, especially when a radial is connected to it.The bottom knob is used to adjust the inductor, to tune in the SWR for the band you’re working; and the top knob is used to fine tune the SWR by adjusting the variable capacitor. This antenna will help you get on the air quickly, but like other small verticals, there are limitations.

I was under the impression that this antenna would also transmitted apparently it only recieves

completely unworkable. Came very broken in the box, do not order