[Antennas] Low Power Transmitter

Sat, 22 Feb 2003 11:58:35 -0800

Check out the four pin TTL crystal oscillators!!  Radio Shack has a few,
many electronics surplus stores carry several, they are available from just
above DC to just below daylight and rarely cost more than a couple bucks
new.  They run on 5 VDC and you can control the power output with a resistor
or just use the output pin for a very inefficient antenna.

Kurt

---
Ross Technologies Signals Intelligence Division
Rosetta Proving Grounds
----- Original Message -----
From: Charles Greene <[email protected]>
To: <[email protected]>; <[email protected]>; Antennas
<[email protected]>
Sent: Saturday, February 22, 2003 02:03
Subject: [Antennas] Low Power Transmitter

> Hi,
>
> I am need of a small, battery powered 20 meter transmitter for use as a
> test device which I can attach to the feed point of an antenna, hoist it
> up, read the field strength, then retrieve it.  It needs to have a power
> level of .5 to 1 watts, xtal control and battery powered with a few AA
> cells or a preferably a 9v battery. I don't want to go for a K1, as it is
> too much and too heavy.  Does anyone have one for sale, know of an
> inexpensive kit or have a good schematic in mind?   I'm trying to
> investigate the field strength of an EH antenna with various lengths of
> feed lines starting with zero.  My antenna analyzer doesn't have enough
> power to be read even on an amplified field strength meter.
>
> Yes Virginia, an EH antenna works.  I'm trying to find out why.
>
>
> 73, Chas, W1CG
> K2 #462
>
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>
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> Larry Wilson KE1HZ [email protected]
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