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1. LF: Re: WSPR OBSERVATIONS (score: 1): Author: "mal hamilton" <[email protected]>; Date: Fri, 04 Dec 2015 19:22:53 +0100; Guten Tag Stefan Main amp is a single Decca 5501 module and has a smit trigeer so can take sine or square wave. I use square wave input for Opera and QRSS because of the divide down from 5 Mhz main V; /rsgb_lf_group-archives/html/rsgb_lf_group/2015-12/msg00073.html (10,691 bytes)
2. LF: Re: WSPR OBSERVATIONS (score: 1): Author: "mal hamilton" <[email protected]>; Date: Fri, 04 Dec 2015 19:25:32 +0100; Nice signal Stefan on MF WSPR this evening TOP OF THE SHOP DE MAL/G3KEV From: [email protected] DK7FC Sent: Friday, December 04, 2015 5:07 PM To: [email protected] rsgb_lf_group@black; /rsgb_lf_group-archives/html/rsgb_lf_group/2015-12/msg00074.html (10,350 bytes)
3. Re: LF: Re: WSPR OBSERVATIONS (score: 1): Author: DK7FC <[email protected]>; Date: Fri, 04 Dec 2015 21:39:53 +0100; R Mal, Then i would try the TC4426, if you have them at home. And a ferrite transformer to rise the voltage level a bit and to decouple TX from PA. https://129.206.22.210:8001/f/80bc50b01d/ for examp; /rsgb_lf_group-archives/html/rsgb_lf_group/2015-12/msg00080.html (12,082 bytes)
4. Re: LF: Re: WSPR OBSERVATIONS (score: 1): Author: DK7FC <[email protected]>; Date: Fri, 04 Dec 2015 21:44:07 +0100; PS: Watch the duty cycle of the output signal. I don't know how accurate it has to be for that PA. Maybe you'll need another amp stage in front of the 4426 and anti-serial Z-diodes. Or an op amp stag; /rsgb_lf_group-archives/html/rsgb_lf_group/2015-12/msg00081.html (12,648 bytes)
5. Re: LF: Re: WSPR OBSERVATIONS (score: 1): Author: Mal Hamilton <[email protected]>; Date: Fri, 4 Dec 2015 21:42:01 +0000; PS: Watch the duty cycle of the output signal. I don't know how accurate it has to be for that PA. Maybe you'll need another amp stage in front of the 4426 and anti-serial Z-diodes. Or an op amp sta; /rsgb_lf_group-archives/html/rsgb_lf_group/2015-12/msg00085.html (13,086 bytes)

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