Return-Path: Received: (qmail 52913 invoked from network); 21 Sep 2004 14:13:49 -0000 Received: from unknown (HELO ptb-spamcore02.plus.net) (192.168.71.3) by ptb-mailstore01.plus.net with SMTP; 21 Sep 2004 14:13:49 -0000 Received: from mailnull by ptb-spamcore02.plus.net with spamcore-l-b (Exim 4.32; FreeBSD) id 1C9lSN-000BLR-BB for dave@picks.force9.co.uk; Tue, 21 Sep 2004 15:17:23 +0100 Received: from [192.168.67.2] (helo=ptb-mxcore02.plus.net) by ptb-spamcore02.plus.net with esmtp (Exim 4.32; FreeBSD) id 1C9lSN-000BLO-8I for dave@picks.force9.co.uk; Tue, 21 Sep 2004 15:17:23 +0100 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore02.plus.net with esmtp (Exim) id 1C9lOu-000HX2-7G for dave@picks.force9.co.uk; Tue, 21 Sep 2004 14:13:48 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1C9lOk-0002gb-1P for rs_out_1@blacksheep.org; Tue, 21 Sep 2004 15:13:38 +0100 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1C9lOj-0002gR-Kw for rsgb_lf_group@blacksheep.org; Tue, 21 Sep 2004 15:13:37 +0100 Received: from cmailm4.svr.pol.co.uk ([195.92.193.211]) by relay.thorcom.net with esmtp (Exim 4.41) id 1C9lOg-0004f7-2M for rsgb_lf_group@blacksheep.org; Tue, 21 Sep 2004 15:13:37 +0100 Received: from modem-39.angrod.dialup.pol.co.uk ([62.136.114.39] helo=d6y6c7) by cmailm4.svr.pol.co.uk with smtp (Exim 4.14) id 1C9lOe-00087k-3i for rsgb_lf_group@blacksheep.org; Tue, 21 Sep 2004 15:13:33 +0100 Message-ID: <000001c49fe5$7581bb20$2772883e@d6y6c7> From: "Lawrence Mayhead" To: rsgb_lf_group@blacksheep.org References: <000c01c49fb9$cba26440$c7d0fc3e@l8p8y6> Date: Tue, 21 Sep 2004 15:13:31 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1409 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-SPF-Result: relay.thorcom.net: 195.92.193.211 is neither permitted nor denied by domain of g3aqc.freeserve.co.uk X-Spam-Score: 0.9 (/) X-Spam-Report: autolearn=no,HTML_30_40=0.809,HTML_MESSAGE=0.001,RCVD_IN_SORBS=0.1 Subject: LF: Re: PORTADYNE Content-Type: text/html; charset=windows-1252 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Status: No, hits=0.8 required=5.0 tests=HTML_30_40,HTML_MESSAGE 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-Spam-Filtered: by PlusNet SpamCORE (v3.00) Content-transfer-encoding: 8bit
 
----- Original Message -----
From: hamilton mal
To: rsgb_lf_group@blacksheep.org
Sent: Tuesday, September 21, 2004 10:02 AM
Subject: LF: PORTADYNE

Hi All
Has anyone ever heard of a vintage radio called a PORTADYNE. Radio maybe 90 - 100 years old. It has 4 valves, which are missing. Unusual valve bases 4 pin with one pin offset, bases look small. It has a loop antenna wound around the inside of the cabinet. It has a rotary base plate to swivel the radio for best reception. The case is the usual polished wood.
Any help appreciated for restoration work, cct etc or original box !!
 
73 de Mal/G3KEV
Valves sound like ordinary 2 volt filament series.pin spacing 1.6cm approx.types PM2LF/HL etc, grid is pin with closer spacing anode opposite.
Line up possibly:-HF Amp(pentode, anode terminal on top)...Det(triode) ...audio amp (also triode)... O.P (Triode/possibly pentode.term. on side of base)
Laurie.