[Amps] use or not coaxial audio cable to transmitter's

[Alek Petkovic]

Get yourself some ferrite rods and wind as many turns of rg58 as you 
can fit on it to make a 'line isolator' choke. Place this choke in 
the rg58 coax line close to your pll driver.

Similarly. Make a line isolator choke and place it in the feedline as 
close as possible to the feedpoint of your inverted L antenna.

That should solve your problems as it sounds like you are getting rf 
into places that you don't want it to be. The chokes should help 
significantly in this regard.

If you don't have any ferrite rods or you are not up to making the 
line isolator chokes yourself, then go to RadioWorks and buy a few of 
their ready made models.

Also, wrapping a few turns of each lead going in or out of your 
equipment through a snap on ferrite will not harm the cause at all.

73, Alek
VK6APK


At 05:21 PM 31/10/2010, tzikas tzik wrote:
>here you can see all of you a schematic from my transmitter installation
>http://tzitzikas.site90.net/files/temporary/block_diagram.pdf
>I must use ground rod at the end of RG214 (at the feed point) because i have
>connect a 2.5mH choke between antenna's feed point and the cable of ground
>rod to ground the static high voltage of antenna, to protect my equipment.
>Do you propose to install a second ground rod and connect it with the other
>ground rod?
>What length must have at least the ground rod to work well?
>thank you very much
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>Amps mailing list
>Amps at contesting.com
>http://lists.contesting.com/mailman/listinfo/amps


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