HI,

Has anyone any info or a data sheet for a type 803 valve?

I looks like a large pentode, just a little taller than a 813.

RRH

It takes a minute to search for the 803 data sheet on google:

http://hereford.ampr.org/cgi-bin/tube?tube=3D803

I used that tube many years ago. It is pretty similar to an 813, but not =
recommended above 20 MHz.

Tony, I0JX

"real-radio-ham" ha scritto nel messaggio =
...
HI,
=20
Has anyone any info or a data sheet for a type 803 valve?
=20
I looks like a large pentode, just a little taller than a 813.
=20
RRH
=20

Hi,

Thanks for the link, I did a google but used the word valve rather than
tube, must remember that for the future when searching for American valves.

It's going in a HB CW TX, 6j6-807-803 on 80 and 40. If I can find a mod
transformer big enough it may even end up on AM now that we have the band
extension on 40.

RRH


"Antonio Vernucci" wrote in message
...
It takes a minute to search for the 803 data sheet on google:

http://hereford.ampr.org/cgi-bin/tube?tube=803

I used that tube many years ago. It is pretty similar to an 813, but not
recommended above 20 MHz.

Tony, I0JX

"real-radio-ham" ha scritto nel messaggio
...
HI,

Has anyone any info or a data sheet for a type 803 valve?

I looks like a large pentode, just a little taller than a 813.

RRH

40 meter expansion? I'm in the dark here, could you please post a link or
some info?
tnx!

It's going in a HB CW TX, 6j6-807-803 on 80 and 40. If I can find a mod
transformer big enough it may even end up on AM now that we have the band
extension on 40.

RRH

real-radio-ham wrote:
Hi,

Thanks for the link, I did a google but used the word valve rather
than
tube, must remember that for the future when searching for American
valves.

It's going in a HB CW TX, 6j6-807-803 on 80 and 40. If I can find a
mod
transformer big enough it may even end up on AM now that we have the
band
extension on 40.

Sounds interesting! That 6J6 is going to get lost in there with those
big tubes.

Funny quirk about the 803 is that they require about 40V on the
suppressor grid. Don't know if that was common for power pentodes of
that era, or something special about the 803.

73,
Mike, KK6GM

"7MHz Extension

Following further talks with Ofcom it is anticipated that the 100kHz
extension to the 40m band as agreed at WRC03 will come on stream at the end
of October. This will extend the current frequency allocation in the band
from 7000 – 7100kHz to 7000 – 7200kHz."

So far the UK, Norway, and Switzerland have access to the new section of
band, others will follow in the next 2 years.

A few stations over here are active on AM around 7.142, hopping to get on
there myself in a few weeks if I can get this project built and working, the
first two stages are just about ready, if I can find a mod transformer at
the next rally I'll have all the parts I need.

"-XC-" wrote in message
...
40 meter expansion? I'm in the dark here, could you please post a link or
some info?
tnx!

It's going in a HB CW TX, 6j6-807-803 on 80 and 40. If I can find a
mod
transformer big enough it may even end up on AM now that we have the
band
extension on 40.

RRH

Tnx!

"real-radio-ham" wrote in message
...
"7MHz Extension

Following further talks with Ofcom it is anticipated that the 100kHz
extension to the 40m band as agreed at WRC03 will come on stream at the
end
of October. This will extend the current frequency allocation in the band
from 7000 - 7100kHz to 7000 - 7200kHz."

So far the UK, Norway, and Switzerland have access to the new section of
band, others will follow in the next 2 years.

A few stations over here are active on AM around 7.142, hopping to get on
there myself in a few weeks if I can get this project built and working,
the
first two stages are just about ready, if I can find a mod transformer at
the next rally I'll have all the parts I need.

"-XC-" wrote in message
...
40 meter expansion? I'm in the dark here, could you please post a link
or
some info?
tnx!

It's going in a HB CW TX, 6j6-807-803 on 80 and 40. If I can find a
mod
transformer big enough it may even end up on AM now that we have the
band
extension on 40.

RRH

"Antonio Vernucci" wrote in message
...
It takes a minute to search for the 803 data sheet on google:

http://hereford.ampr.org/cgi-bin/tube?tube=803

Hi -
Better yet:
http://www.mif.pg.gda.pl/homepages/f.../049/8/803.pdf