Return-Path: Received: from rly-mg07.mx.aol.com (rly-mg07.mail.aol.com [172.20.83.113]) by air-mg08.mail.aol.com (v121.4) with ESMTP id MAILINMG083-a2247c91ea91ee; Sat, 01 Mar 2008 04:15:39 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-mg07.mx.aol.com (v121.4) with ESMTP id MAILRELAYINMG074-a2247c91ea91ee; Sat, 01 Mar 2008 04:15:23 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1JVNmv-0007YR-4K for rs_out_1@blacksheep.org; Sat, 01 Mar 2008 09:13:49 +0000 Received: from [193.82.59.130] (helo=relay2.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1JVNmu-0007YI-IL for rsgb_lf_group@blacksheep.org; Sat, 01 Mar 2008 09:13:48 +0000 Received: from smtp812.mail.ird.yahoo.com ([217.146.188.72]) by relay2.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1JVNmp-0001du-UO for rsgb_lf_group@blacksheep.org; Sat, 01 Mar 2008 09:13:48 +0000 Received: (qmail 39635 invoked from network); 1 Mar 2008 09:13:34 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=btinternet.com; h=Received:X-YMail-OSG:X-Yahoo-Newman-Property:From:To:References:Subject:Date:Message-ID:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Mailer:In-Reply-To:X-MimeOLE:Thread-Index; b=wiEmq8Xv57U7Tz9oCesADHweX9KYjPEWR2zv2YCv3KPFbCGZzLK8+dA2ez9PdgiE6VQ/nLZ7zHGQi+u9EqUdyVEIOOe4Buhs3E5+GkJ0CIdbCVVCNujJLM32VuDaUo4OZuTa+4F++GOP5Eko4oUkPbdr52E97EMhkq+xSV4Zp9s= ; Received: from unknown (HELO ken) (ken.h.wright@btinternet.com@86.148.124.52 with login) by smtp812.mail.ird.yahoo.com with SMTP; 1 Mar 2008 09:13:34 -0000 X-YMail-OSG: E5oyc1IVM1lN2ePSXk6lKc4GCKuLmlzhEcpVMRXLp9P.tJ9VPqT3qobRxwy1Ca8TaPA9dcP2FA-- X-Yahoo-Newman-Property: ymail-3 From: "Ken Wright" To: References: <000001c87a63$13267ea0$8700a8c0@rtv5f9d8dfdf44> <47C753BC.3060006@ukonline.co.uk> <004901c87abb$636f7120$0301a8c0@g3kev> <47C82E82.20200@ukonline.co.uk> <000901c87b17$0b094400$0201a8c0@ken> <47C89AA8.70805@ukonline.co.uk> Date: Sat, 1 Mar 2008 09:13:35 -0000 Message-ID: <001201c87b7c$887306a0$0201a8c0@ken> MIME-Version: 1.0 X-Mailer: Microsoft Office Outlook 11 In-Reply-To: <47C89AA8.70805@ukonline.co.uk> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 Thread-Index: Ach7LdGU5MbtIZpnSiWhAlp52/3snQATpSuQ DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: RE: LF: RE: G3LDO 500kHz rig Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit 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: listenair ; SPF_helo : n X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_822_from : n Thank you Peter for the info. Regards. Ken M0KHW -----Original Message----- From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Peter Dodd Sent: 29 February 2008 23:52 To: rsgb_lf_group@blacksheep.org Subject: Re: LF: RE: G3LDO 500kHz rig Ken M0KHW wrote > How many watts is the PL519 running?, I have some 807s I was thinking of > using, but they like 750 volts on the anode. > The PL509/519 is very rugged and will give far more power than an 807 at relatively low HT voltages. I run my PL519 at around 80watts output although it is capable of a bit more without exceeding the anode dissipation. The only downside is that the PL509/519 requires 40v for the heaters but I had a suitable transformer in one of my many junk boxes. In 1998 LX1PD used a transmitter on 136kHz that used 16 PL36s in parallel. The PL36 was also a TV line TB valve. regards Peter, G3LDO