Return to KLUBNL.PL main page

rsgb_lf_group
[Top] [All Lists]

LF: 9 kcs

To: "rsgb" <[email protected]>
Subject: LF: 9 kcs
From: "mal hamilton" <[email protected]>
Date: Wed, 17 Mar 2010 16:45:27 -0000
Reply-to: [email protected]
Sender: [email protected]
If I get time and a NOV for 9 kcs my proposed approach for TX would be an IC 706 on 900 kcs divided by 100/driver chip TC 4427 and a couple of FETS class D for an output of a few hundred watts, designed for 50 ohms, 50 ohm coax to antenna 200 feet away from shack as at present for 137 and 500 kcs.
Use the existing 1/4 wave inv L for 500 plus 2 additional ones same spec all in parallel and base loaded by inductor to resonate on 9 kcs, use existing ground radial system not too elaborate. Antenna height is approx 100 ft vertical and the rest to make up the 1/4 wave is horizontal.
The speculators, gamblers and dreamers might be able to guess what distance I might cover.
Let me compare your figures !!
Assume pwr to be 400 watts at base of antenna.
Using 9 kcs figure for convenience, but 8970 kcs would prob be the qrg
 
 
de mal/g3kev
 
 
<Prev in Thread] Current Thread [Next in Thread>