Frans checks out the MRA-QRP 20W QRP Passive Loop Antenna

Many thanks to SWLing Post contributor, Frans Goddijn, who writes:

Dear Thomas,

In the following video, I show a little loop antenna that I bought online from AliExpress:

On arrival one of the parts, the semi-transparant box with variable capacitor for antenna tuning turned out to be broken due to the bigger box having been thrown around in transit.

The seller promptly provided me with the necessary part (plus extra) for repairs.

Yesterday I repaired it and today I assembled the antenna and tested it a bit in the afternoon and early evening as soon as reception started to get well enough.

It’s a fun antenna, affordable too.

The video shows how effective the variable capacitor is.

Best regards,


Thank you, Frans. That is certainly a very affordable passive loop option. If you’re an urban QRPer, all the better. I should also mention, you have one of the nicest radio operating positions out there!

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5 thoughts on “Frans checks out the MRA-QRP 20W QRP Passive Loop Antenna

  1. mangosman

    Not mentioned this is a high frequency tuned loop.
    When a radio station is received the receiver has to be tuned to the station’s frequency. The tuning of the antenna will just make that station stronger. In this video it would seem that only the antenna frequency tuning is the only thing being changed?

    The switch was not described, it appears it changes the frequency band being tuned.
    Receiver frequency Range: 3.5-22.5MHz
    Transmitter frequency range Range: 7-21 MHz maximum power is 20 W SSB/CW.

  2. Julian Stargardt

    Thank you Frans for your video clip on your new loop – being an apartment dweller in a low rise semi-Faraday cage in high rise Hong Kong, I’m ever on the look out for loop antennae!

    And Larry there I was wondering what is that spectavular looking receiver! so thank you for identifying it, I immediately googled it (is that an official verb yet?) and came across this informative description at this link:
    If anyone else is interested for more info on the Siemens E 311 reciever, the link above will make for interesting reading… looks like a promising website

    Frans, any chance of you doing a review of your spectacular looking Siemens E 311 communications receiver?
    I’m sure I’m not the only one who’d like to hear more about it!

    Best wishes & 73

  3. Keith Ballinger

    This looks a promising antenna – I would be interested to find out how it works on transmit as it could be a solution for when I operate from my friend’s apartment in Montreal.

    Keith G0RQQ / VA2QU


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