Radio Ukraine off the air
 

Nothing heard lately on 7440kHz. Confirmed in latest Glenn Hauser's
World of Radio. No reason given so far.

Jim

Radio Ukraine off the air
 

On Apr 18, 4:05*pm, wrote:
Nothing heard lately on 7440kHz. Confirmed in latest Glenn Hauser's
World of Radio. No reason given so far.

Jim

Rats - I sent them a RR a few weeks back; oh, well - hope for the best.

Radio Ukraine off the air
 

On Sun, 18 Apr 2010 16:31:17 -0700 (PDT), bpnjensen
wrote:

On Apr 18, 4:05*pm, wrote:
Nothing heard lately on 7440kHz. Confirmed in latest Glenn Hauser's
World of Radio. No reason given so far.

Jim

Rats - I sent them a RR a few weeks back; oh, well - hope for the best.

Well, they have been off before with budget problems. Maybe,its just
temporary. Maybe they are looking for an out of production Svetlana
tube for the transmitter.

Jim

Radio Ukraine off the air
 

Radio Ukraine off the air
 

m II wrote:
wrote:

Well, they have been off before with budget problems. Maybe,its just
temporary. Maybe they are looking for an out of production Svetlana
tube for the transmitter.


Not likely. Most of the so called 'Western' powers with older radar
setups had to by spare tubes from Russia. As far as I know, tube
production is still going well there.

There may be a lesson to be learned from that.





mike

There are power tube rebuilders in Louisiana and in California. As the
tubes get bigger they are generally easier to renew. BTW: there are
industrial furnaces that use high power RF. Transmitting is not the
only use for these tubes.

Radio Ukraine off the air
 

On Apr 20, 5:59*am, dave wrote:
m II wrote:
wrote:

Well, they have been off before with budget problems. Maybe,its just
temporary. Maybe they are looking for an out of production Svetlana
tube for the transmitter.

Not likely. Most of the so called 'Western' powers with older radar
setups had to by spare tubes from Russia. As far as I know, tube
production is still going well there.

There may be a lesson to be learned from that.

mike

There are power tube rebuilders in Louisiana and in California. *As the
tubes get bigger they are generally easier to renew. *BTW: *there are
industrial furnaces that use high power RF. *Transmitting is not the
only use for these tubes.- Hide quoted text -

- Show quoted text -

What role does a large tube play in an industrial furnace?

Radio Ukraine off the air
 

bpnjensen wrote:


- Show quoted text -

What role does a large tube play in an industrial furnace?

Here's an example:

http://www.thalesgroup.com/Portfolio...K112/?pid=6903

"The new ITK 112 triode, intended for high-power induction and
dielectric heating applications, delivers continuous RF power of 280 kW.
It is especially well suited to industrial applications such as the
manufacture of rolled welded tubes, heat treatment of metals, and
textile and wood drying."

Radio Ukraine off the air
 

On 18-Apr-10 18:05, wrote:
Nothing heard lately on 7440kHz. Confirmed in latest Glenn Hauser's
World of Radio. No reason given so far.

Jim

Curiously, the Radio Ukraine International streaming audio feed is still
running on their website. Very odd indeed. The website doesn't show
any notice of a shutdown...

-Raymond

Radio Ukraine off the air
 

On Apr 20, 1:53*pm, dave wrote:
bpnjensen wrote:

- Show quoted text -

What role does a large tube play in an industrial furnace?

Here's an example:

http://www.thalesgroup.com/Portfolio...K112/?pid=6903

"The new ITK 112 triode, intended for high-power induction and
dielectric heating applications, delivers continuous RF power of 280 kW.
It is especially well suited to industrial applications such as the
manufacture of rolled welded tubes, heat treatment of metals, and
textile and wood drying."

I see - so it actually powers an RF heating element? Pretty slick!

Radio Ukraine off the air
 

bpnjensen wrote:
On Apr 20, 1:53 pm, dave wrote:
bpnjensen wrote:

- Show quoted text -
What role does a large tube play in an industrial furnace?
Here's an example:

http://www.thalesgroup.com/Portfolio...K112/?pid=6903

"The new ITK 112 triode, intended for high-power induction and
dielectric heating applications, delivers continuous RF power of 280 kW.
It is especially well suited to industrial applications such as the
manufacture of rolled welded tubes, heat treatment of metals, and
textile and wood drying."

I see - so it actually powers an RF heating element? Pretty slick!


I would think it's an induction thing. The circulating currents set up
in the metal do the heating. With wood, it may well be something like
microwaves, heating the water content.



mike

Radio Ukraine off the air
 

On Apr 21, 9:35*pm, m II wrote:
bpnjensen wrote:
On Apr 20, 1:53 pm, dave wrote:
bpnjensen wrote:

- Show quoted text -
What role does a large tube play in an industrial furnace?
Here's an example:

http://www.thalesgroup.com/Portfolio...K112/?pid=6903

"The new ITK 112 triode, intended for high-power induction and
dielectric heating applications, delivers continuous RF power of 280 kW.
It is especially well suited to industrial applications such as the
manufacture of rolled welded tubes, heat treatment of metals, and
textile and wood drying."

I see - so it actually powers an RF heating element? *Pretty slick!

I would think it's an induction thing. The circulating currents set up
in the metal do the heating. With wood, it may well be something like
microwaves, heating the water content.

mike- Hide quoted text -

- Show quoted text -

I think that's what I was thinking, except you put it a bit more
elegantly :-)