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Most of the amplifiers used with active antennas have fairly common flaws, and the amplifiers found in these two URLs are no exception. The circuit from Electronic Design:

Thanks, This will make it a serious candidate for experiments. Regards, Cor Beijersbergen van Henegouwen Yes. That is how r2000slwer built mine. There is a power injector or diplexer at the receiver

If you have a link relevant to the group, please post it in the Links section. If you just put it in a message, it will get lost in the shuffle after a few days. The coverage of the list is pretty

Thanks for that info, much appreciated :) Gotcha =) I'm still looking for the availability for some of the parts of the wl1030 and for some I might need to get them per 10, so the wl1030 plan might

the diodes, that could

Could this design be adapted to have the power supply through the coax? Cor Beijersbergen van Henegouwen For a simpler and better acitve dipole that really works, I have one, try

Hi, In the article on the active antenna the author shows two versions ... one version is a mono pole, the one you mention that uses a ground rod. The other version uses a dipole. The dipole version

I think you are seeing the capacitors he added. He says he added 1 mf ceramic capacitors, and that the diodes were not noisy, because they "did not reduce the noise at the lower end of the NDB". He

Are you speaking of the active whip that he mentions works well at SW too? As this one needs a ground rod its one of the antenna's I wont be able to use (4th floor apartment building no lighting rods

Hi Will, You are right it is important to take care when dressing antenna feed line, especially when dealing with a dipole (balanced) antenna in order to minimize antenna/feed line interaction which

Note that of the second power supply here, 12 volt AC/DC #273-1776, Dallas says; "It turned out that the diodes in this power supply were not noisy like the diodes in the bridge I used for the 24 VDC

Here is an interested active antenna: http://www.elecdesign.com/Articles/Print.cfm?ArticleID=6244 Has somebody in this group built one? --- timo

Richards, The MFJ-956 and MFJ-16010 tuners are both intended for use with random length wire antennas... not loops. MFJ does make loop tuners. The MFJ-933 and -935 but they are not Z-match designs.

Hi: Let me help with your questions .... the short (1 meter) antenna is connected to the FET in either a mono pole or dipole version of his circuit. The gas discharge tube is a safety device that will

frederick1444 schreef: http://amradioantennas.com/ about 40 cm dia. I have made FM loop with dia 86cm, good directivity. Marc -- -- Shortwave transmissions in English, Francais, Nederlands, Deutsch,

<http://www.kongsfjord.no/dl/Antennas/Some%20Of%20My%20Favorite%20Small%20Antennas%20For%20MW%20And%20LW%20rev%202.pdf> OK... There are some issues I see with my VERY little experience (basically,

--- In loopantennas@..., "gfreport1" <gfreport@...> wrote: <snip> Thank you William, much appreciated. If you have any additional info later about the power supply its most welcome. I will

Hi, I am looking for an effective antenna to use that will pull in local AM stations more clearly, about all I hear on AM now is static. Do loop antennas work for FM stations? I would like better FM