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Thank you, Martin. 73 Andrea IN3IWZ <martin_ehrenfried@...> ha scritto:

Yes, that's the default setting in this group, attachments are removed. Dave, can you add it in the files section please. Regards, Martin

Hi Dave It seems that the attachment has been removed from your email. Thanks for all your contributes! 73 Andrea IN3IWZ [email protected]> ha scritto:

East German???? To what are you referring? As far as I am aware, the LZ1AQ loop amplifier is this one: http://www.lz1aq.signacor.com/docs/wsml/wideband-active-sm-loop-antenna.htm Dan - K3GMQ

Maybe that is why the original East German design had a suitable inductor in the same place Paul VE3PVB

The following items have been added to the Files area of the [email protected] group. * /AG5RT/LZ1AQ amplifier noise reduction.pdf (

After talking with Dave Evans, he noticed that my load resistance slider was at minimum and thought that my radials were too long.? He suggested that I raise and shorten them.? I raised them from on

Dave, I used 36 turns of #32 bifilar turns on a FT75-50 toroid for the 4 JFETs amp. I designed a new board that has a common mode choke on the back side of?the board, which uses a FT84-75 toroid

Since the last email I read on this loop antenna group addressed an E-Field probe preamp and I've read a number of high-Z preamps on this group, I'll contribute in that thread: high-Z input

Hi Martin Have you tried the G4COL design with? transformer in the FET circuit?. Its simple and is supposed to have better large signal handling

Thank you John. That is very impressive for the relatively small size. Thanks to the tips here in the group, I am very optimistic that I will be able to erect an AziLoop with the 13.8 metre

Hi Christoph, re. Loop and Beverage comparisons My 160m - 220m beverages are usually about 3dB better in s/n than the K9AY loop on 1.8 and 3.5MHz in their design directions, as one would expect from

Hi Christoph, Yes I need the (remote) preamp nearly all the time to get sufficient s/n over-ride not helped by feeder length of <200m.. Multi-joined RG6 most over 30 years old with loss about 4dB at

That's exactly how it is! Thank you, John, for the solid explanation. I am fascinated that despite the relatively small size of your AziLoop, you are often able to compare it with the Beverage and

Bill, My reply crossed with yours. Glad your results are better. My nulls in both loop and K9AY modes are very close to the bearing -180deg as expected, when f/b is optimised 73, John

Hi Bill, We have not heard further from you so I assume you have not improved your f/b. I have been using my Aziloop in K9AY mode for a year now and always managed to get groundwave f/b ratios

Here is a list of stations that I used to further check my AZIloop.? I used my trusty Perseus and got better results than from the Apache.? I believe the AZI loop is working ok. I believe low nulls

I don't doubt. But I'm retired and have the time. However, the scourge of retirement: Have the time but don't have the $$$. Dave - W?LEV <martin_ehrenfried@...> wrote:

With my short E-field probes, I've never tried paralleling JFETS. I need to try that someday with the J-310's. I usually follow those with a simple emitter follower to establish 50-ohms for the

If you want unbelievable nulls, that happen in about 5 seconds, buy a Perseus 22. You can also manually steer the signals with it to. If you are using verticals they need to be spaced about 200'