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1. LF: Re: QRP 1W /PA circuit (score: 1): Author: "Clemens Paul" <[email protected]>; Date: Wed, 11 Jan 2012 14:59:59 +0100; Stefan, it is clearly visible here, abt 10dB over noise in a 70Hz BW and even weakly audible. 73 Clemens DL4RAJ Loc:Südostbayern,12,90006°O/48,4150°N (Gridloc:JN68KJ) http://no.nonsense.ee/qthmap/?qt; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-01/msg00098.html (13,583 bytes)
2. Re: LF: RE: QRP 1W /PA circuit (score: 1): Author: Stefan Schäfer <[email protected]>; Date: Wed, 11 Jan 2012 15:48:20 +0100; Hi Rik, The driver is a IXDD414CI which drives the 4 FETs by using a ferrite core (Al=4000, OD=20mm). Primary 4 turns in series with 2 Ohm and 10uF. Then there are 4 secondary widings with 5 turns ea; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-01/msg00170.html (15,437 bytes)
3. LF: RE: QRP 1W /PA circuit (score: 1): Author: Rik Strobbe <[email protected]>; Date: Wed, 11 Jan 2012 15:27:56 +0100; Hi Stefan, how do you drive the H-bridge amp ? 73, Rik ON7YD - OR7T Van: [email protected] [[email protected]] namens Stefan Schäfer [[email protected]; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-01/msg00575.html (13,921 bytes)

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