nostalgia for valve radios

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Today in an inner-city collectables store, I saw an old Kreisler model 11-7
bakelite radio, just like my grandmother had. Price tag was $295.
I don't know if it were working.
 
On 21-Jun-14 6:28 PM, bruce56@topmail.co.nz wrote:
Today in an inner-city collectables store, I saw an old Kreisler model 11-7
bakelite radio, just like my grandmother had. Price tag was $295.
I don't know if it were working.

I feel a little guilty when I think of the dozens of old bakelite cased
radios I trashed and stripped down for parts as a kid. It would be neat
to have a few of them now.
 
On 21/06/2014 8:28 PM, bruce56@topmail.co.nz wrote:
Today in an inner-city collectables store, I saw an old Kreisler model 11-7
bakelite radio, just like my grandmother had. Price tag was $295.
I don't know if it were working.

Valve radios had a characteristic smell when turned on. I can still
remember it thirty years later.

Sylvia.
 
On Sat, 21 Jun 2014 03:28:34 -0700 (PDT), bruce56@topmail.co.nz wrote:

Today in an inner-city collectables store, I saw an old Kreisler model 11-7
bakelite radio, just like my grandmother had. Price tag was $295.
I don't know if it were working.

They've been collectable for a long time now.
 
On 21/06/2014 2:17 PM, Sylvia Else wrote:
On 21/06/2014 8:28 PM, bruce56@topmail.co.nz wrote:
Today in an inner-city collectables store, I saw an old Kreisler model 11-7
bakelite radio, just like my grandmother had. Price tag was $295.
I don't know if it were working.


Valve radios had a characteristic smell when turned on. I can still remember it thirty years later.

Sylvia.

Burning....
 
On 25/06/2014 7:14 AM, yaputya wrote:
On 21/06/2014 2:17 PM, Sylvia Else wrote:
On 21/06/2014 8:28 PM, bruce56@topmail.co.nz wrote:
Today in an inner-city collectables store, I saw an old Kreisler
model 11-7
bakelite radio, just like my grandmother had. Price tag was $295.
I don't know if it were working.


Valve radios had a characteristic smell when turned on. I can still
remember it thirty years later.

Sylvia.

Burning....

I suppose, but it was clearly a slow process.

Sylvia.
 
On 25/06/2014 3:22 AM, Sylvia Else wrote:
On 25/06/2014 7:14 AM, yaputya wrote:
On 21/06/2014 2:17 PM, Sylvia Else wrote:
On 21/06/2014 8:28 PM, bruce56@topmail.co.nz wrote:
Today in an inner-city collectables store, I saw an old Kreisler
model 11-7
bakelite radio, just like my grandmother had. Price tag was $295.
I don't know if it were working.


Valve radios had a characteristic smell when turned on. I can still
remember it thirty years later.

Sylvia.

Burning....


I suppose, but it was clearly a slow process.

Sylvia.

Maybe the valve heater circuit caused the burning smell?
Or was it ozone?

As a kid in the 60's with an interest in radio etc. I strung up all
sorts of dangerous arrangements in my room. I remember having Philco
radios with electromagnetic loudspeakers that used the speaker as a HT
filter, I put one of the speakers on top of my wardrobe with god knows
what kind of cable connecting it back to the radio. Must have been a
4-core cable but probably wouldn't have been rated at HT levels.
 
On Wed, 25 Jun 2014 20:27:45 +0200, Yaputya wrote:


Maybe the valve heater circuit caused the burning smell?
Or was it ozone?

Slowly cooking house dust on the valves.
 
On Thu, 26 Jun 2014 11:49:11 +1000, Sylvia Else wrote:

On 26/06/2014 8:41 AM, news13 wrote:
On Wed, 25 Jun 2014 20:27:45 +0200, Yaputya wrote:



Maybe the valve heater circuit caused the burning smell?
Or was it ozone?

Slowly cooking house dust on the valves.


Now that sounds more plausible - if a bit disgusting, given that most
house dust is human skin.

I suspected that someone would twig.
 
On 26/06/2014 8:41 AM, news13 wrote:
On Wed, 25 Jun 2014 20:27:45 +0200, Yaputya wrote:



Maybe the valve heater circuit caused the burning smell?
Or was it ozone?

Slowly cooking house dust on the valves.

Now that sounds more plausible - if a bit disgusting, given that most
house dust is human skin.

Sylvia.
 
On 28/06/2014 7:57 AM, Jasen Betts wrote:
On 2014-06-25, Yaputya <bjfoster@yahoo.com> wrote:
On 25/06/2014 3:22 AM, Sylvia Else wrote:
On 25/06/2014 7:14 AM, yaputya wrote:
On 21/06/2014 2:17 PM, Sylvia Else wrote:
On 21/06/2014 8:28 PM, bruce56@topmail.co.nz wrote:
Today in an inner-city collectables store, I saw an old Kreisler
model 11-7
bakelite radio, just like my grandmother had. Price tag was $295.
I don't know if it were working.


Valve radios had a characteristic smell when turned on. I can still
remember it thirty years later.

Sylvia.

Burning....


I suppose, but it was clearly a slow process.

Sylvia.

Maybe the valve heater circuit caused the burning smell?
Or was it ozone?

The NTC thermistor for the herater circuit would get hot enough
to burn paint. any dust that settles on it would be converted
to smoke. any volatile chemicals would be altered too. "Hot" has a smell.

As a kid in the 60's with an interest in radio etc. I strung up all
sorts of dangerous arrangements in my room. I remember having Philco
radios with electromagnetic loudspeakers that used the speaker as a HT
filter, I put one of the speakers on top of my wardrobe with god knows
what kind of cable connecting it back to the radio. Must have been a
4-core cable but probably wouldn't have been rated at HT levels.

A 4 core cable intended for 415V three phase motors would surely be
sufficient. something with automotive applications, not so much.

I probably only had telephone cable at the time....
 
"Jasen Bleatts"

The NTC thermistor for the herater circuit would get hot enough
to burn paint.

** Never seen an NTC used in a valve radio, valve TVs sometimes had them.

No sign of one in the schem for the 11-7.

http://www.tuberadio.com/robinson/museum/Kriesler11-7/

The characteristic smell is mostly from hot bakelite (case, valve bases and
sockets) and the varnish used on the AC supply transformer.


..... Phil
 

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