Re: LF: exciter for 137 and 500 kHz

[<jrusgrove@comcast.net>]

Andy

 

It's been a while ... but believe I used this online calculator.

 

http://www.werewoolf.org.je/apf.htm

 

Jay

 

 

----- Original Message -----

From: Andy Talbot

To: rsgb_lf_group@blacksheep.org

Sent: Saturday, November 06, 2010 9:59 AM

Subject: Re: LF: exciter for 137 and 500 kHz

Very Interesting.  

Where did you find the design data for the allpass network?   I've only been able to find the values for up to 3+3 allpass stages.

 

Mind you, at that number of chips a DSPic begins to look attractive.

 

Andy
www.g4jnt.com

On 6 November 2010 11:52, <jrusgrove@comcast.net> wrote:

Nothing earth shattering ... another way to skin the cat. The 137 and 500 kHz units have been in use for a few years ... just now getting around to the write up.

http://www.w1vd.com/137-500Phasingexciter.html

Jay W1VD  WD2XNS  WE2XGR/2