Return-Path: X-Spam-DCC: paranoid 1169; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,HTML_MESSAGE autolearn=unavailable version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id s68ClfGC006565 for ; Tue, 8 Jul 2014 14:47:41 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1X4Ujz-0007MA-6i for rs_out_1@blacksheep.org; Tue, 08 Jul 2014 13:43:23 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1X4Ujy-0007M1-S3 for rsgb_lf_group@blacksheep.org; Tue, 08 Jul 2014 13:43:22 +0100 Received: from fw.cz.gmc.net ([194.212.10.23] helo=mail.cz.gmc.net) by relay1.thorcom.net with esmtps (TLSv1:RC4-MD5:128) (Exim 4.82) (envelope-from ) id 1X4Ujw-0004Dg-85 for rsgb_lf_group@blacksheep.org; Tue, 08 Jul 2014 13:43:21 +0100 Received: from CZ029PM (194.212.10.29) by mail.cz.gmc.net (192.168.47.18) with Microsoft SMTP Server (TLS) id 8.1.436.0; Tue, 8 Jul 2014 14:43:16 +0200 Message-ID: From: Petr Maly To: References: <9FE61D98573D45E08A39735EF283914F@gmc.net> <53BAE6E9.3050206@tele2.se> <1404795548.36812.YahooMailNeo@web173001.mail.ir2.yahoo.com> <1404815337.38505.YahooMailNeo@web173004.mail.ir2.yahoo.com> <1404815801.86408.YahooMailNeo@web173004.mail.ir2.yahoo.com> In-Reply-To: <1404815801.86408.YahooMailNeo@web173004.mail.ir2.yahoo.com> Date: Tue, 8 Jul 2014 14:49:18 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 16.4.3505.912 X-MimeOLE: Produced By Microsoft MimeOLE V16.4.3505.912 X-EsetResult: clean, is OK X-EsetId: 0A13AF3E7E8FD3DB5851F2 X-Scan-Signature: 80e63e173fa93b7854d61e1697120204 Subject: LF: Re: Pure off-topic: old tubes Content-Type: multipart/alternative; boundary="----=_NextPart_000_041C_01CF9ABB.CB9CDA90" 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 29 ------=_NextPart_000_041C_01CF9ABB.CB9CDA90 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Thanks all for your responses. The valves looked NOS therefore I searched for specs to be able to make = a small PA with them. Now it looks I will put them back on the shelf for another twenty years = instead, in order to have a real rarity in hands one day, hi. Have a great day, Petr, OK1FIG From: M0FMT=20 Sent: Tuesday, July 08, 2014 12:36 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Fw: LF: Pure off-topic: old tubes Blyme I'm having fun with this try again Please see attachement = below.>>>>>>>>>>>>>>>>>>> =20 Hi all this may help with codes but don't trust it this is out the STC = designers guide 1947. When I was five..... :o(=20 73 es GL Pete M0FMT IO91UX ----- Forwarded Message ----- From: M0FMT To: "rsgb_lf_group@blacksheep.org" =20 Sent: Tuesday, 8 July 2014, 5:59 Subject: Fw: LF: Pure off-topic: old tubes Hi all I like Johan went to my favourite online resources but nothing. I looked = in http://www.tubebooks.org/technical_books_online.htm where an old STC = catalogue lists every number either side of the "4B" range .... very = frustrating! If anyone has out of copyright radio or audio books, manuals and = catalogues there can be no better place to send them too than Pete = Millett, details on the website.(an incredible labour of love). 73 es GL Pete M0FMT IO91UX ----- Forwarded Message ----- From: Johan Bodin To: rsgb_lf_group@blacksheep.org=20 Sent: Monday, 7 July 2014, 19:28 Subject: Re: LF: Pure off-topic: old tubes Hello Peter, I expected to find the tube at http://www.tubedata.org/where Frank Philipse has been collecting tube data sheets for 15 years but it wasn't ... It must be a very exotic tube! 73 Johan SM6LKM Petr Maly skrev 2014-07-07 09:20: > Hello all > =20 > I apology for the off-topic. However I know that this group is = attended > by very experienced gents, mainly from the UK. > I found these two tubes in the junk, see the attachment. I spent quite = a > while to search the whole Internet for some specs, in vain. > They are very similar to QB3/300, or TESLA=E2=80=99s RE125, same size, = same > socket. The only visible difference is the shape and material of the = anode. > I think the number 55 in the designation could possibly be the anode > dissipation. > The labels are: > STC 4B/55 > ITT 4B/55/B > By some lucky chance does anybody have any information about them? > =20 > Thanks, 73, Petr, OK1FIG > =20 > =20 > =20 ------=_NextPart_000_041C_01CF9ABB.CB9CDA90 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable
Thanks all for your responses.
The valves looked NOS therefore I searched for specs to be able to = make a=20 small PA with them.
Now it looks I will put them back on the shelf for another twenty = years=20 instead, in order to have a real rarity in hands one day, hi.
 
Have a great day, Petr, OK1FIG
 
 
From: M0FMT
Sent: Tuesday, July 08, 2014 12:36 PM
Subject: Fw: LF: Pure off-topic: old tubes
 
Blyme I'm having fun with this = try=20 again  Please see attachement=20 below.>>>>>>>>>>>>>>>>>= ;>>
 
Hi all this may help with codes but don't trust it this is out the = STC=20 designers guide 1947. When I was five..... :o(
73 es GL Pete M0FMT = IO91UX
 


----- Forwarded Message -----
From: M0FMT = <m0fmt@yahoo.co.uk>
To: = "rsgb_lf_group@blacksheep.org"=20 <rsgb_lf_group@blacksheep.org>
Sent: Tuesday, 8 July 2014, = 5:59Subject: = Fw: LF: Pure=20 off-topic: old tubes
 
Hi all
 
I like Johan went to my favourite online resources but nothing. I = looked in=20 http://www.tubebooks.org/technical_books_online.htm = where an=20 old STC catalogue lists every number either side of the "4B" range .... = very=20 frustrating!
 
If anyone has out of copyright radio or audio books, manuals and = catalogues=20 there can be no better place to send them too than Pete Millett, details = on the=20 website.(an incredible labour of love).

73 es GL Pete M0FMT IO91UX
 
----- Forwarded Message -----
From: Johan = Bodin=20 <jhbodin@tele2.se>
To: rsgb_lf_group@blacksheep.org = Sent: = Monday, 7 July=20 2014, 19:28
Subject:=20 Re: LF: Pure off-topic: old tubes

Hello Peter,

I = expected to find=20 the tube at http://www.tubedata.org/where Frank
Philipse has=20 been collecting tube data sheets for 15 years but it wasn't
... It=20 must be a very exotic tube!

73
Johan=20 SM6LKM


Petr Maly skrev = 2014-07-07=20 09:20:
> Hello all
> 
>=20 I apology for the off-topic. However I know that this group is = attended> by very experienced gents, mainly from the UK.> I found these two tubes in the junk, see the = attachment. I spent=20 quite a
> while to search the whole Internet for some = specs, in=20 vain.
> They are very similar to QB3/300, or = TESLA=E2=80=99s RE125,=20 same size, same
> socket. The only visible difference = is the=20 shape and material of the anode.
> I think the number = 55 in the=20 designation could possibly be the anode
> = dissipation.> The labels are:
> STC 4B/55
>=20 ITT 4B/55/B
> By some lucky chance does anybody have = any=20 information about them?
> 
> = Thanks, 73,=20 Petr, OK1FIG
> 
>  > 



=

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