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The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Warren I have all the original handbooks for the Decca 5501 range if you need specific info let me know. The low band versions have a different Capacitor board and are easy to mod for 73 Khz The higher band versions are not so convenient to mod for 73 but more suited to 136. I have 2 x 5501 units for the high band modified for 136 but fortunately I have 2 x C boards for the low band so I just need to modify the Coils for 73 if we got this band again I was active on 73 towards the end but by then nearly everyone had moved to 136 Most hams in the UK were using modified Audio amps on 73 and I do not recall anyone using the decca on that band at the time. Decca amps were not avai [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 131286aabc28dd54c072e5e89638c651 Subject: Re: LF: Decca Experts - Converting Red to Purple ? Content-Type: multipart/alternative; boundary="----=_NextPart_000_0097_01CE914D.1A694920" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40,HTML_MESSAGE, MISSING_OUTLOOK_NAME 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 Status: O X-Status: X-Keywords: X-UID: 2286 This is a multi-part message in MIME format. ------=_NextPart_000_0097_01CE914D.1A694920 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Warren I have all the original handbooks for the Decca 5501 range if you need = specific info let me know. The low band versions have a different = Capacitor board and are easy to mod for 73 Khz The higher band versions are not so convenient to mod for 73 but more = suited to 136.=20 I have 2 x 5501 units for the high band modified for 136 but fortunately = I have 2 x C boards for the low band so I just need to modify the Coils = for 73 if we got this band again I was active on 73 towards the end but by then nearly everyone had moved = to 136 Most hams in the UK were using modified Audio amps on 73 and I do not = recall anyone using the decca on that band at the time. Decca amps were = not avai From: Warren Ziegler=20 Sent: Sunday, August 04, 2013 1:28 AM To: rsgb_lf_group=20 Subject: LF: Decca Experts - Converting Red to Purple ? Hello to all of the Decca Navigator experts out there...=20 I have an unconverted Decca 5501 transmitter which is marked "Red" - = I believe that is 112kHz - would like to run it on 73kHz. The tank coil = reads about 80uH, can I just pad it down with more "C" to get to 73kHz = or would that mess up the L/C ratio and thus lower the loaded "Q" ? Another question - anyone have a spare "Purple" Decca on 71kHz that = they would consider parting with? --=20 73 Warren K2ORS WD2XGJ=20 WD2XSH/23 WE2XEB/2 WE2XGR/1 WG2XRS/1 ------=_NextPart_000_0097_01CE914D.1A694920 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Warren
I have all the original handbooks for the Decca 5501 range if you = need=20 specific info let me know. The low band versions have a different = Capacitor=20 board and are easy to mod for 73 Khz
The higher band versions are not so convenient to mod for 73 but = more=20 suited to 136.
I have 2 x 5501 units for the high band modified for 136 but = fortunately I=20 have 2 x C boards  for the low band so I just need to modify the = Coils for=20 73 if we got this band again
I was active on 73 towards the end but by then nearly everyone had = moved to=20 136
Most hams in the UK were using modified Audio amps on 73 and I do = not=20 recall anyone using the decca on that band at the time. Decca amps were = not=20 avai
 
 
 
Sent: Sunday, August 04, 2013 1:28 AM
Subject: LF: Decca Experts - Converting Red to Purple=20 ?
 
Hello to all of the Decca Navigator experts out there...=20
 
    I have an unconverted Decca 5501 transmitter = which is=20 marked "Red" - I believe that is 112kHz - would like to run it on = 73kHz. =20 The tank coil reads about 80uH, can I just pad it down with more "C" to = get to=20 73kHz or would that mess up the L/C ratio and thus lower the loaded "Q" = ?
 
    Another question - anyone have a spare "Purple" = Decca on=20 71kHz that they would consider parting with?
 
 
 
--
73 Warren=20 K2ORS
          &nbs= p;    =20 WD2XGJ=20
           &nb= sp;   =20 WD2XSH/23
          =      =20 WE2XEB/2
          &= nbsp;    =20 WE2XGR/1
           &n= bsp;   =20 WG2XRS/1


 
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