Return-Path: Received: from rly-md10.mx.aol.com (rly-md10.mail.aol.com [172.20.29.148]) by air-md02.mail.aol.com (v123.4) with ESMTP id MAILINMD021-92f4a01e587244; Wed, 06 May 2009 15:31:38 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-md10.mx.aol.com (v123.4) with ESMTP id MAILRELAYINMD107-92f4a01e587244; Wed, 06 May 2009 15:31:22 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1M1moe-0007Ez-SD for rs_out_1@blacksheep.org; Wed, 06 May 2009 20:30:04 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1M1moe-0007Eq-Fu for rsgb_lf_group@blacksheep.org; Wed, 06 May 2009 20:30:04 +0100 Received: from yw-out-1718.google.com ([74.125.46.152]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1M1mob-0005ll-5W for rsgb_lf_group@blacksheep.org; Wed, 06 May 2009 20:30:03 +0100 Received: by yw-out-1718.google.com with SMTP id 9so166077ywk.64 for ; Wed, 06 May 2009 12:29:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:content-type :content-transfer-encoding; bh=2582FSZaIeXzK95yMMcHOISveVtAvhsP54kMLSvjjhg=; b=AK9tkUDjiAPHny4q/WDahLkjtTtXQS76j52OWIAamVraoC0D3DYZ1IFk56DDPzahML IC5p9YiHNWRpSgx8xgiDB8NkBVbpFSYHUtz8/KAbhqAfh/vPSnQJ2V9kehTkpwcl7LFU LAsugobfew+FtV/FDo1UHQzDrOjcPTTgoJZbU= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; b=LbeqqI/5RfEBPgINEO6UWRSyStvsKGGM3JCH1hwvsNEdkmcMqxnVxyFqcOrLzFz7X7 Aqh8athFEGDy+7JRSTy6AOnvRrEz3SXPeTG8H7+r65ZBQDe9bL+evs9kEVV22otgn8Ea w7ewtdpLD7ndk0i3DS5HmFIQfeSJYiHXXVD9k= MIME-Version: 1.0 Received: by 10.90.106.4 with SMTP id e4mr1312348agc.95.1241638199258; Wed, 06 May 2009 12:29:59 -0700 (PDT) In-Reply-To: <008501c9ce63$c07ecf30$0301a8c0@mal769a60aa920> References: <008501c9ce63$c07ecf30$0301a8c0@mal769a60aa920> Date: Wed, 6 May 2009 15:29:59 -0400 Message-ID: <57a24ca70905061229w6c853f60w291cca01c39eec09@mail.gmail.com> From: Warren Ziegler To: rsgb_lf_group@blacksheep.org X-Karma: unknown: DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Decca 5501Jeep Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-AOL-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-m207.2 ; domain : gmail.com DKIM : pass X-Mailer: Unknown (No Version) Mal, You couldn't be more wrong!!! I have been running a Decca in QRSS 60 for several years now at full power + often overnight and occasionally for days at time with ZERO transmitter failures. The Decca runs cool at 1.4 - 1.5 kW DC input. Perhaps you are not allowing for sufficient air circulation through the heat sinks. My Decca is in a rack with plenty of clearance above and below for the air to circulate. I don't think that it's a good idea to run the Decca sitting on a table as I've seen done in some shack pictures. --=20 73 Warren K2ORS WD2XGJ WD2XSH/23 WE2XEB/2 WE2XGR/1 On Wed, May 6, 2009 at 11:59 AM, mal hamilton wrote: > The old decca Jeep 5501 cannot strand LMCW 120, 240 or dfcw for long, 3 or > 10 sec dot or normal cw is about their limit on full power. > I have 2 units (6 modules) but prefer my home brew with robust FETS on 137 > Khz. > I likewise have a h/brew fet pa for 500=A0Khz class E and it is=A0virtuall= y > indestructable when correctly adjusted using a scope. > > G3KEV