Return to KLUBNL.PL main page

rsgb_lf_group
[Top] [All Lists]
<prev [Date] next>
[Advanced]
 <prev [Thread] next>

Re: LF: exciter for 137 and 500 kHz

from [Andy Talbot] [Permanent Link][Original]
To: [email protected]
Subject: Re: LF: exciter for 137 and 500 kHz
From: Andy Talbot <[email protected]>
Date: Sun, 7 Nov 2010 11:33:59 +0000
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type; bh=61n3TltlAvOS9Dyd4BByOU3D92eaADxyu9b+hONIcGs=; b=Zh/hP55wh+KBrdO0o/OVRAYcaPVMcY/42sJxItORSR7lk40xKlc9WQ3rjajEYw22Ye h4VdReTQKV7RU2z+3lbqHpYxS1i12YCpsnffuR3/9ezBPj7lnR2RoYGN74/zXZPVlPac iAwXDEG9xw1a3uJ2x3RYDpWuVCw8hr7+6M8Lc=
Domainkey-signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=jZsW5mdSCyd7AO/Jm8CiXo5k37bYY+JlqTEZJhFvMKfDcNw2Cb4yI9pk5ZlFqX5PwM 0xKxRluTXqwajKPS9frLcyyGrGV2iTiYj0uo6A5KTG9CI0sZeGkgSV2A8Xa5rCn06Dpq eoQorwilbZu8D5e2xH31kZTiCgC1QW4EYefSc=
Domainkey-status: good (testing)
In-reply-to: <[email protected]>
References: <000c01cb7da9$23b1a1e0$8d01a8c0@JAYDELL> <[email protected]> <000d01cb7e30$2f5041f0$8d01a8c0@JAYDELL> <[email protected]> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
yes please.  
 
May even help my rusty - learnt-at-evening-class German
On 7 November 2010 10:54, cricri <[email protected]> wrote:
Hello Andy ,
I'll send you a copy of the german UKW version  !

If you need it . Says and I do  !


Formulas are same ... :-) :-) :-)

73


Xtian / F1VL


Le 07/11/2010 11:03, Andy Talbot a écrit :
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.
 
On 6 November 2010 11:52, <[email protected]> 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




[More with this subject...]
<Prev in Thread] Current Thread [Next in Thread>
Previous by Date:  Re: IMO SYNOPTIC was Re: LF: The Wideband Noise, Jean-L. RAULT
Next by Date:  Re: LF: WSPR T/A hole discussion, James Moritz
Previous by Thread:  Re: LF: exciter for 137 and 500 kHz, cricri
Next by Thread:  Re: LF: exciter for 137 and 500 kHz, Jean-L. RAULT
Indexes:  [Date] [Thread] [Top] [All Lists]