[ARC5] ARC5 Digest, Vol 122, Issue 35

Sat Mar 15 16:34:09 EDT 2014

yeah and why did they drop the plug-in I.F.s? 73 de Pat/EI7CN

-----Original Message----- 
From: arc5-request at mailman.qth.net
Sent: Saturday, March 15, 2014 4:00 PM
To: arc5 at mailman.qth.net
Subject: ARC5 Digest, Vol 122, Issue 35

Send ARC5 mailing list submissions to
arc5 at mailman.qth.net

To subscribe or unsubscribe via the World Wide Web, visit
http://mailman.qth.net/mailman/listinfo/arc5
or, via email, send a message with subject or body 'help' to
arc5-request at mailman.qth.net

You can reach the person managing the list at
arc5-owner at mailman.qth.net

When replying, please edit your Subject line so it is more specific
than "Re: Contents of ARC5 digest..."

Today's Topics:

   1. Re: What the......? (Jack Antonio)
   2. Re: What the......? (Fuqua, Bill L)
   3. Re: What the......? (J. Forster)
   4. Re: What the......? (Geoff)

----------------------------------------------------------------------

Message: 1
Date: Sat, 15 Mar 2014 00:15:19 -0400
From: Jack Antonio <scr287 at att.net>
To: arc5 at mailman.qth.net
Subject: Re: [ARC5] What the......?
Message-ID: <5323D3D7.7070403 at att.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

On 3/14/2014 10:15 PM, J. Forster wrote:

> Does anyone have a link to the Type 12 Maint. Manual. I'm curious about
> the connector in the place where the ARC-5s have the frequency dial. I
> assume the other connectors are Power and Control Box.

This connector provides for B+ transfer when used with a transmitter.

In the type 12 sets, the receiver dynamotor also powers the
transmitter(s).  B+ from the dynamotor goes to pin A, B+ returns
from the T-R relay in the transmitter(s)and goes to pin E.

B+ is removed from the entire receiver in transmit.

If the receiver is not used with an associated transmitter, there
is a jumper installed, plus a cap on the connector.

This connector also has LV, Tel, and Ground, but the system
wiring diagrams in the manual do not show that they are used.

Jack Antonio WA7DIA/w

------------------------------

Message: 2
Date: Sat, 15 Mar 2014 05:10:34 +0000
From: "Fuqua, Bill L" <wlfuqu00 at uky.edu>
To: "arc5 at mailman.qth.net" <arc5 at mailman.qth.net>
Subject: Re: [ARC5] What the......?
Message-ID:
<B7E8B5B4A202074084E2515A7B10A7F32D6B11B1 at ex10mb02.ad.uky.edu>
Content-Type: text/plain; charset="us-ascii"

  Loctal tubes were a step between octal and miniature tubes.
Once miniature tubes caught on loctals became obsolete and were no longer 
produced.
If there was a need to secure the miniature tube in a socket they used 
shields or some
sort of clamp. But usually shields.

73
Bill wa4lav

------------------------------

Message: 3
Date: Sat, 15 Mar 2014 06:42:28 -0700 (PDT)
From: "J. Forster" <jfor at quikus.com>
To: "Jack Antonio" <scr287 at att.net>
Cc: arc5 at mailman.qth.net
Subject: Re: [ARC5] What the......?
Message-ID:
<34807.12.226.214.5.1394890948.squirrel at popaccts.quikus.com>
Content-Type: text/plain;charset=iso-8859-1

Thank you. Not essential then. Kinda like the accessory connectror on the
ARB.

-John

==============

> On 3/14/2014 10:15 PM, J. Forster wrote:
>
>> Does anyone have a link to the Type 12 Maint. Manual. I'm curious about
>> the connector in the place where the ARC-5s have the frequency dial. I
>> assume the other connectors are Power and Control Box.
>
> This connector provides for B+ transfer when used with a transmitter.
>
> In the type 12 sets, the receiver dynamotor also powers the
> transmitter(s).  B+ from the dynamotor goes to pin A, B+ returns
> from the T-R relay in the transmitter(s)and goes to pin E.
>
> B+ is removed from the entire receiver in transmit.
>
> If the receiver is not used with an associated transmitter, there
> is a jumper installed, plus a cap on the connector.
>
> This connector also has LV, Tel, and Ground, but the system
> wiring diagrams in the manual do not show that they are used.
>
> Jack Antonio WA7DIA/w
>
> ______________________________________________________________
> ARC5 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/arc5
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:ARC5 at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>

------------------------------

Message: 4
Date: Sat, 15 Mar 2014 11:07:33 -0400
From: "Geoff" <geoffrey at jeremy.mv.com>
To: "Fuqua, Bill L" <wlfuqu00 at uky.edu>, <arc5 at mailman.qth.net>
Subject: Re: [ARC5] What the......?
Message-ID: <D1C2D297CA154FCBB00F11668272C0FB at computer1>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original

Miniatures were already out as a full set for battery radios in answer to
Sylvanias 1Lnn series Loktals. The handwriting was already on the wall by
the time the 6V Loktals arrived in force in 39 and the 14 series which were
mostly 12V octal equivalents, for AC/DC sets in 1940.

The actual reason for Loktals was a push to Sylvania by Philco, Zenith, and
a couple of smaller OEM's to not have to use anything developed by RCA. It
was the result of a long term animosity going back to the 20's.

Carl

----- Original Message ----- 
From: "Fuqua, Bill L" <wlfuqu00 at uky.edu>
To: <arc5 at mailman.qth.net>
Sent: Saturday, March 15, 2014 1:10 AM
Subject: Re: [ARC5] What the......?

>  Loctal tubes were a step between octal and miniature tubes.
> Once miniature tubes caught on loctals became obsolete and were no longer
> produced.
> If there was a need to secure the miniature tube in a socket they used
> shields or some
> sort of clamp. But usually shields.
>
> 73
> Bill wa4lav
> ______________________________________________________________
> ARC5 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/arc5
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:ARC5 at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2014.0.4336 / Virus Database: 3722/7199 - Release Date: 03/15/14
>

------------------------------

_______________________________________________
ARC5 mailing list
ARC5 at mailman.qth.net
http://mailman.qth.net/mailman/listinfo/arc5

End of ARC5 Digest, Vol 122, Issue 35
************************************* 