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Hello, Had very similar "issue". There is a jumper on amplifier's board that needs to be closed to allow the power. Chavdar ships it with this jumper open. It's in one of the manuals. Hope that was an

We're trying to get our LZ1AQ going. We're trying to get our LZ1AQ going. It is working but seems to have very poor sensitivity. It is being compared to an existing MLA-30 loop and is quite a bit

In my case the miniwhip coax comes down the pole and enters the shed just below roof height, so burying the cable isn't relevant, There was surprisingly little interference from the solar panels on

Put a "clean" earth at the base of the Mini-Whip support, to act as the RF "ground" reference. Choke the coax between the Mini-Whip ground and the shed, ideally bury the coax if you can. This adds

The following files and folders have been uploaded to the Files area of the [email protected] group. * /Simplified Lankford Phaser.pdf (

While it isn't a loop antenna the MiniWhip antenna can be very useful, even if only as a "noise" antenna for use with a phaser. The usual advice to avoid common-mode problems was to provide a

For both. DC current is flowing in opposite direction and does not cause flux and saturation. regards Fred

Thanks, Fred! Err... has to be both, right? Because the same coax is used to carry RF and DC. Are you anticipating the ~150 mA DC will saturate the tiny core? How about a mini-whip? In the

Is this for the DC or RF path, or both ?

For receive-only purposes i am sometimes using Bourns or Wuerth on-board SMD Common Mode Chokes (line

Please be my sanity check. :-) Would a commercial wire-wound common-mode choke be even more cost effective in terms of materials and performance than winding coax on a toroid? I think there is an

*Hi Guy* Thanks for that information. Its such a long time ago? when I exchanged emails with Andy.? I seem to recall that this? "L" version was supposed to have higher HF gain rather than being

Henry, I don't know if your "L" model is actually an "LF" but in 2015 Andrew offered this longwave optimized version. It still received up through HF however (with lower gain than the ALA1530. Here

I haven't compared the ALA1530S+ with any other ALA1530. But for general information on Wellbrook loop amps, all the ALA1530 line were designed for a small one-meter diameter loop. All the ALA100

Has anyone compared the 1530LN with the 1530S+? Which is better?? Ihave still got in use an ALA100M with a 1x1 metre squared loop it works quite good till now. Also, I am very lucky and I have a

Caarlo please do not focus exclusively on the active loop antenna. See your local conditions, the earthing system, the feeder cable more broadly as an interactive system. There might be other reasons,

Hi Caarlo, Did you try to rotate it? For some stations my EFHW is better, for other Loop is better (on different bands - switching with A/B coax switch). But I'm still planning to put it on rotator to

Hi Sam, Thanks for the suggestion, but I need a more noticeable SNR increase than just a bit. Right now it is some 3-6dB behind my full sized antennas, and my initial goal was to outperform the SNR of

Hi Martin, I used a couple on each end. With a just a couple of these same snap-ons on the PC supply cable solved a problem with my WebSDR, as there were some very noticeable periodical strips along

Hi Martin and Caarlo, Did that for my LZ1AQ: 2 stacked FT240-31 with SFTP CAT-8 wrapped around. I think it helped a bit compared to just a snap one single (but thick)