Nice little prog - I'd love to see the source code :-)
Taken from that reference :-
"The calculations to derive the time constants and
therefore the 90 degree frequencies, and the component values,
were based on equations in the article by Dr. (Eng) Ralph
Oppelt, DB2NP, published in VHF Communications Volume No. 18,
Summer, 2/1987."
Does anyone have back copies of VHF Comms ???
Andy
www.g4jnt.com
On 7 November 2010 03:59,
<[email protected]>
wrote:
Andy
It's been a while
... but believe I used this online calculator.
Jay
----- Original Message
-----
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.
