A lossy line (e.g. old coaxial cable) "improves" SWR :-) Miloš OK1FMY

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For a theoretical no loss transmission line, SWR does not vary along the line. For a lossy line, the SWR will increase somewhat (depending upon the loss) from source to load (transmitter to antenna).

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Hi I would just like to add my two penny worth. A swr meter only measures SWR at the point where it is added in the transmission line. I ideal place is at the aerial, if you have 1:1 here at 50 ohms a

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Bertel, The Elecraft W1 power/SWR meter is the most RELIABLE. Charles Brown N4SO

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Have a look at the power/SWR meter I described here: https://g8gyw.github.io/ It gives me SWR to 5% between 1W and 10W.

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Hi. Thanks once more for all the interesting feedback on this topic. I will see if I can make up some kind of plan to test what might give effect. 73 SM6OES

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The only cure might be a shift to a balanced antenna. I have great admiration for hams stuck with attic antennas who manage to still enjoy this hobby. Lately I've QSO'd a few hams who have successfull

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Hi, Berand The thing I would do to reduce the confusion is to obtain 2 each 51 ohm 3 watt metal film resistors. Connect the resistors in series to make 100 ohms. Try each of the SWR bridges with this

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@Jerry I would say that You're probably spot on there. As I mentioned in a previous post, all the meters show SWR 1.0 when fed into a 50 Ohms dummy load. I have tried a choke, some 12 turns RG58 aroun

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The resistive bridges has the advantages, that the transmitter under test will never see a worse swr than 2:1. This 1-LED too https://qrpguys.com/end-fed-half-wave-sota-antenna-tuner On page 7 of buil

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The QRZ.com antenna forum has this pop up now and then - the pundits suggest common-mode issues might be the underlying problem in cases like yours. Your EFHW has common-mode issues inherent in the de

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@Willie So true... I will give it a go, and see what it has to say. @Johan Yes, I have it calibrated with the optional high performance standards supplied with the kit. I agree that the interface is a

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Bertel, Based on my understanding of the technology, I believe the QRPoMeter has an issue. It uses a resistance bridge rather than the more common Stockton bridge to measure the resistance of the ante

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Hej Bertel, FA-VA5 is a very accurate analyzer but it has to be calibrated with known good SOL standards (Short/Open/Load). I own an FA-VA5 myself and I'm very satisfied with its performance. The 3-bu

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Well, yes and no, given the 'one watch knows what time it is, multiple watches have no idea' thing, but it'll give you an idea, and I'd probably trust a NanoVNA (or my RigExpert) over a cheap kit. 73,

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Hi Willie. Hmmm, why didn't I think of that...? I have both a NanoVNA and a FA-VA5 lying around. I will sure hook them up and see what they have to say. Would they give a more accurate reading? Thanks

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Unfortunately, at low power levels the sampling diodes offset becomes significant, and not every meter corrects for that in the same way (if at all). If you have a NanoVNA (or could borrow one), you c

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Hi Rich. Sorry, I was a bit unclear about my readings. The figures 1.4 - 4.0 is the SWR reading. The power out is about in the same range on all meters. Likewise, the seems to agree with SWR 1.0 when

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As "wise man" once said: Man with one wattmeter know power output, man with two or more have no idea. I have been told that if you have a good accurate dummy load and measure the VRMS of your signal,

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Hi folks. I'm wondering a little about Power/SWR meters for QRP use. I have just tried a couple of meters on my setup using a QDX feeding a 20m EFHW strung up in the attic. The four meters I've tested

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