[BC] Re: CONTINENTAL 10 KW AM'S TUBE TYPE

[George Nicholas]

Thanks Dave, yes you are right it was a 316F.

Related to your list, I saw the KLIF 316 back in 1988, when Norm Phillips
gave me a nickel tour of the sites.  Glen Callison was there that day,
working on the gen set.  I saw him grab a mud daubler's nest with his bare
hands and break it off the gen set cabinet, then step on it.  I took off
like a bat outta hell down the gravel road, with Glen yelling out "hey,
where ya going, it's just mud daublers?!"  Must've been 50 circling the gen
set (or so it seemed).

What a hoot!

gn

----- Original Message ----- 
From: <DHultsman5 at aol.com>
To: <broadcast at radiolists.net>
Sent: Tuesday, May 17, 2005 9:48 PM
Subject: [BC] Re: CONTINENTAL 10 KW AM'S TUBE TYPE


>
> In a message dated 5/17/05 10:55:47 AM Central Daylight Time,
> broadcast-request at radiolists.net writes:
> I think you mean the 316 F. It had the direct coupled solid state exciter,
> Before that there was the 316 B it used 3 4cx5000s screen modulated. It
was
> notorious for requiring that the interlocks be jumpered to make certain
> adjustments. In between there was a model that used all ceramic tubes, I
dont
> remember what the letter suffix was. I also do not know if any were ever
> sold.
> Maybe Dave Hultsman could tell us.
>
> R
> ++++++++++++++++++
>
> You rang---I answer
>
> The 316 10 kW. which was the driver for the 317 50 kW. was a three cabinet
> transmitter, Barry has a photo of the transmitters used as a driver at
KRLA and
> WDIA and a Canadian station.  I understood that CE also sold some of the
316's
> as 10 kW's opnly in the US, Canaga and worldwide.  This was essentially
part
> of the Western Electric line after CE bought the Western Electric AM
product
> line.
>
> The next was the 316B which as Rob Meuser stated was three 4CX5000A
tetrodes
> in parallel, screen modulated by 4 each 4-65A tubes in the ecreen circuit.
> The 315B used only two tubes.
>
> The next was the 316C which was two 4CX10,000 tubes in parallel operated
in
> linear mode, screen modulated by three 4CX250B tubes.  I know there was
one at
> WCFL and one at WLAC backing up their 317C's  I know of several of the
315C's,
> Boston MA, WRR, Dallas, WMAK, Nashville
>
> The next was sometime that Saintone was working on in 1968 when I was
looking
> at transmitters for KLIF's new 12 tower array.  They had a working
prototype
> 10 kW two-tube solid state transmitter.  They finally got it out about
1971 as
> the 315F and 316F, using two 4CX10000's in the 5 kW and two 4CX15000's in
the
> 10 kW.  The tubes operated in a Doherity amplifier making it more
efficient
> than running in linear fashion as the two previous models.  The also set
it up
> so you essentially peaked the grids and dipped the plates which was the
way
> most class C plate modululated rigs tuned.
>
> These two transmitters were the FIRST two-tube 5 and 10 kW AM transmitters
> and predated the MW-5 from Gates and by several more years the MW-10 from
Harris.
>
> Dave
>
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