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Need help identifying this radio
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Brenda Dyer
Apr 20, 2013, 1:56:55 AM4/20/13
to
http://www.ebay.com/itm/1930s-TABLETOP-TUBE-RADIO-MODEL-80-M-/121091365842?_trksid=p2047675.l2557&ssPageName=STRK%3AMEWNX%3AIT&nma=true&si=5IQogJxmsiZiFQ77S6hEZZFleFo%253D&orig_cvip=true&rt=nc
Or you can see a pic on the binaries (alt.binaries.pictures.radio)
Or you can see a pic on the binaries (alt.binaries.pictures.radio)
Foxs Mercantile
Apr 20, 2013, 9:40:26 AM4/20/13
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Looks like it's a wood cabinet with two knobs and five tubes.
Hope that helps. ;-)
Jeff
Hope that helps. ;-)
Jeff
Brenda Dyer
Apr 20, 2013, 4:17:33 PM4/20/13
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"Foxs Mercantile" wrote in message news:kku5s4$ge5$1...@speranza.aioe.org...
Looks like it's a wood cabinet with two knobs and five tubes.
Hope that helps. ;-)
Jeff
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Actually, it's got four tubes and a ballast.
6K7, 6J7, 43, 25Z5 and a 185R8
It's a REALLY cheap TRF, no regen. I'm sure it's good only for local
stations.
Foxs Mercantile
Apr 20, 2013, 6:51:11 PM4/20/13
to
On 4/20/2013 3:17 PM, Brenda Dyer wrote:
>
> Actually, it's got four tubes and a ballast.
>
> 6K7, 6J7, 43, 25Z5 and a 185R8
>
> It's a REALLY cheap TRF, no regen. I'm sure it's good only for local
> stations.
Just trying to help ;-)
>
> Actually, it's got four tubes and a ballast.
>
> 6K7, 6J7, 43, 25Z5 and a 185R8
>
> It's a REALLY cheap TRF, no regen. I'm sure it's good only for local
> stations.
Anybody got a copy of the Larsen Locator to look this up for Brenda?
Jeff
Chester Copperpot
Apr 20, 2013, 7:29:09 PM4/20/13
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Carter
Apr 20, 2013, 8:03:59 PM4/20/13
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On 4/20/2013 4:17 PM, Brenda Dyer wrote:
> It's a REALLY cheap TRF, no regen. I'm sure it's good only for local
> stations.
You bring up an interesting point. I'm no battery radio expert, but I
> It's a REALLY cheap TRF, no regen. I'm sure it's good only for local
> stations.
always thought TRFs and regens were two completely different things,
much like apples and oranges.
Typically, a regen set has tons of gain and therefore no need of the
several RF stages a TRF set has.
Inquiring minds want to know.
P.S.
Did somebody give Kim Jong Un a cold shower? He seems to have gotten
quite quiet lately.
And yes, he IS crazy. Anyone that threatens unprovoked nuclear war is,
by definition, crazy.
Brenda Dyer
Apr 20, 2013, 8:15:40 PM4/20/13
to
"Carter" wrote in message news:kkva7r$4df$1...@dont-email.me...
--------------------------------------------------------------------------------
There are a few radios with regen for added gain, admittedly most I have
found were superhet/regen hybrids, like the Philco 57 I just finished
working on.
I'm sure Jong-Un is still up there being bellicose, it's just that the
Boston Marathon bombings, followed closely by the ricin and the West, Texas
explosion, have taken over the news cycle.
dave
Apr 21, 2013, 4:11:57 PM4/21/13
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dave
Apr 21, 2013, 4:12:22 PM4/21/13
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Richard Knoppow
May 1, 2013, 3:42:39 AM5/1/13
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"Carter" <k8...@ameritech.net> wrote in message
news:kkva7r$4df$1...@dont-email.me...
> On 4/20/2013 4:17 PM, Brenda Dyer wrote:
>
>> It's a REALLY cheap TRF, no regen. I'm sure it's good
>> only for local
>> stations.
>
> You bring up an interesting point. I'm no battery radio
> expert, but I always thought TRFs and regens were two
> completely different things, much like apples and oranges.
>
> Typically, a regen set has tons of gain and therefore no
> need of the several RF stages a TRF set has.
>
> Inquiring minds want to know.
>
> P.S.
>
There were many TRF sets with regenerative detectors.
>
>> It's a REALLY cheap TRF, no regen. I'm sure it's good
>> only for local
>> stations.
>
> You bring up an interesting point. I'm no battery radio
> expert, but I always thought TRFs and regens were two
> completely different things, much like apples and oranges.
>
> Typically, a regen set has tons of gain and therefore no
> need of the several RF stages a TRF set has.
>
> Inquiring minds want to know.
>
> P.S.
>
The regenerative stage is not so much for gain as for
increased selectivity also works as a BFO when made to
oscillate. Its similar to a Q multiplier. The tuned RF
stages are often used to prevent the regenerative stage from
causing interference when it goes into oscillation by
isolating from the antenna. A regenerative stage can be used
to receive CW without a separate BFO by getting it to just
oscillate. However, the famous Navy RAK and RAL receivers
have two tracking RF stages and a regenerative detector the
latter being used as an autodyne for CW. These are
ship-board receivers and must not radiate.
--
Richard Knoppow
Los Angeles
WB6KBL
dick...@ix.netcom.com
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