SDRplay Community Forum

Dear Phil, On second thought wonder if you could look again at your last antenna model and provide R / JX data from 2 to 14 MHz, but evenly spaced, i.e. every MHz. It should then be possible to implement an autotuner which could zero the capacitive term at every frequency.... What worries me is the ...

Dear Phil, I am simply amazed by (and a little envious of) your capabilities about antenna modeling. I have also seen you are also equipped with the AA - 1400, top of the range antenna analysis meter, so you are able to close the circle, from design, to modeling, to actual antenna measurement and I ...

A very strange wideband noise started on the 20 m. band in the afternoon (16 GMT). Most signals are blotted out and the phenomenon is detectable by the fact that the top of the display becomes whitish. It is still going on now, 5 GMT of June 30. All other frequency bands are in normal condition, as ...

More photos....

Dear Phil, it is 18:00 hours and I am back (tired) from the Riviera. Tomorrow I shall study your material in detail. Here I wish to give you physical details of the Beverage and of my setup, because I fear it is far simpler than you imagined. The antenna is held to the side of the house with a tripl...

Dear Phil, It is six in the morning here and I have just seen your fantastic response. Unfortunately today I cannot even read it properly, as I have to go to sea, on the Riviera, to bring help to a friend of mine who has burned out the diesel on his sailing boat and I have to go there to see the wor...

An intermittent antenna connection, perhaps?

More PC screens enclosed. Use of a correctly matched balun lets you use all the sensitivity advantage of the Hi Z input from broacast band up to the 40 m band. By using normal windings on the cores (not wireline) it is possible to keep the Hi Z input balanced as well (terminal "N" floating) and this...

More PC screens enclosed

Dear Phil, Thanks a lot about your offer of assistance, which I surely need. I can see from your photos that you must have accumulated a big experience! The necessary complement to a Beverage antenna is a properly working balun. To feed an RSP type receiver we need a nominal 600 Ohm antenna input to...