Linux-Hams archive - April 1999: Re: Off topic - 137Mhz signal generator

Re: Off topic - 137Mhz signal generator

Riley Williams (terhi.victor@logonet.com)
Mon, 5 Apr 1999 12:01:01 +0100 (GMT)


Hi Richard.

>> Can any one put me onto a simple circuit for a 137-138 Mhz signal
>> generator.

> Three questions and ill send you a jpg scanned image for this

Mind if I ask for one for a different frequency range?

> 1. variable frequency or fixed?

Variable - to cover the range 100-200 kHz in 100 Hz steps or better.

> 2. output waveform type

There's two versions I'm interested in:

a. Switchable Sine/Square wave.

b. Dual Sinewave, with a fixed 300 Hz between the frequencies.

> 3. power source 9vbatt or 110ac

Here in the UK, mains is 240V nominal, and I'd prefer it to work on
that, but also have a facility for running from a standard car
battery.

Best wishes from Riley.

+----------------------------------------------------------------------+
| There is something frustrating about the quality and speed of Linux |
| development, ie., the quality is too high and the speed is too high, |
| in other words, I can implement this XXXX feature, but I bet someone |
| else has already done so and is just about to release their patch. |
+----------------------------------------------------------------------+
* ftp://ftp.MemAlpha.cx/pub/rhw/Linux
* http://www.MemAlpha.cx/kernel.versions.html