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I just finished building a few of my improved version of the LZ1AQ, in a box with wing nuts and a few ALA1530 LZ1AQ replacement loop amps. If anyone is interested please contact me off list at

Hi John and all Have been playing with my directional lz1aq array. First discovered one of loops was in operational.. that didnt help! Sorted now. Also played with delay line settings. Getting

Hi Simon, If you cant install the mini-loop away from your TX antennas, despite its small size, then another option might be to de-resonate your TX ant and feeder on 160/other bands you operate to

?Hi John and all. I have room for a dhdl, down the side of garden, would face north of east by abit and be reverseble. But would be REAL CLOSE to the tx antennas. ( though they can be isolated/

Sigi Look at the pi4cc antenna system..( re 3 inline phased.though they are verticals.) Simon

Hi Simon, It seems to me that you need an antenna that:- a) is as far away from your TX antennas as possible b) is small enough to fit in space available c) is not blocked by your house or pattern

In addition to the YouTube video about the Waller Flag that Jim posted, there's another one about how to construct one at: https://www.youtube.com/watch?v=WAV-AVA65LY Also,here's a link to a very

i really ejoyed the video https://www.youtube.com/watch?v=1XbIX59xTI8 i had never thought that two phased loops like the waller flag would have such high RDF number (i use a k9ay loop here with not

Hi Simon, Unfortunately, I think you are stuck with needing something relatively large. I previously mentioned 8 phased small loops, this was to provide sufficient S/N and RDF, so as to be

Rather large, plus a fair few negative reviews..ie gone back to a k9. I do have large mag loop at end of garden. ( total circumference 20m of no joins copper tubing.) My ex London qro loop..will try

An antenna no one knows about, anymore, it has disappeared from public view and has no supporters, but has allowed stations to work DX they could not have worked without it. I speak, of course, of

Hi Martin I tend to agree with you. Even with 8 phased loops they will be “below” house gnd level in rhe direction interested in. Would only be able to mount 1 on house roof level. Next month

Hi Simon, I think it is unlikely that your small loops, in such a low noise environment, will have sufficient "sensitivity" to be constrained buy your local nose floor, which is probably why your Tee

Hi been playing around with ft8 on 160m.. on psk reporter heard in vk etc.. ( when band open.) tx and rx antenna is a Marconi T. However rx in said directions from here is poor. ( see below.) Live

I have a SAL-20 antenna for sale.? Contact me off list for details. 73l Bill, WA2DVUCape May. NJ609 425 8651bill.riches@...

@Dave, Martin i am on a weekend trip. Will be back soon and try to answer your questions. regards, Fred

I couldn't agree more, Fred. Audio, yes. ... RF, likely not. But what about below 100 kHz where most of my application lands? I'm primarily interested in "DC" through 100 or so kHz. Dave -

Hi Fred, I've had a look at your circuit diagrams, and wondered if you could clarify a point for me. I'd assumed that placing an active current source, in place of the source resistor, would set the

A better way to improve large-signal handling is to replace the source resistor of the input FET with an active current source. This increases linearity and also reduces the gain loss of the source

Yes i know, but this is comparing apples with oranges. The Ikin Amp is a balanced very low Z Input amplifier for magnetic loops. The current discussion is about Hi-Z impedance change amplifiers for