[R-390] Filters

[Bob Camp]

Hi

I'd suggest that a signal generator of some sort that will run at 455 KHz is a really good idea. The phase noise of many function generators is a bit nasty.

Bob

On Feb 22, 2013, at 1:02 PM, quartz55 <quartz55 at hughes.net> wrote:

> Someone indicated they would send me a few broken filters.  I'm going to see what I have on hand before destroying the 4K one I have any more.  If I can get it working with parts from another, so much the better.  If I find broken magnetostrictive wires on others, I may continue on with trying to see if I can repair the wires.
> 
> I'm still looking for more broken filters to play with.  What the heck if they're broken and we can learn repair methods?
> 
> I'll need to come up with a method of testing them, I have one of those function generator chips I've put in a box, don't know if it goes to 455, but it may, and I think I have some audio amps that may go up there to produce about 10V into 100K.
> ______________________________________________________________
> R-390 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/r-390
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:R-390 at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html