On Sep 3, 12:52 am, RHF wrote:
On Sep 2, 12:29 am, Jasen Betts wrote:

On 2007-08-30, Tam/WB2TT wrote:

I am curious here. At some point you have to switch from metallic conductors
and antennas to lenses and other optics. Any idea what the highest frequency
RF amplifier works at?

I've heard of X-ray lasers.

Bye.
Jasen

I am Hearing a Talking House on 1670 kHz
with the Voice of "Randy the Radio Realitor"
-aka- Randy Steigler =http://www.randysteiger.com/
.
Re/Max Del Oro -in- San Luis Obispo County, CAhttp://www.deloroproperties.com/
Speaking of Astronomical - SFH : 3Br+2Ba ~ $385K
.
Twain Harte, CA 95383 -USA- ~ RHF
.
.
. .

This will be buried inside a completely unrelated thread, but there
are lots of "low power",
Part 15 100mW, devices in the MW band. There is a Military Graveyard
just about 15
miles south of me that has such a transmitter for "self guided
tours". I have seen/received
several "talking houses" including a solar powered one that I was very
tempted to visit
under the cover of dark and appropriate for my own use.

I have seen a few billboards with these also. Down toward Tennessee
the big firworks
outlets tended to use them about 8 years ago. I don't know if they are
still in use cause
I don't get down there these days.

Regarding my hunt for the UNID 1640 station rebroadcasting A NOAA
weather stream,
I had assumed by content it was at or near Cave Run Lake, near
Morehead KY. But we
visited there Friday and no signal. I talked to the Corp of Engineers
and they suggested
we check in Jackson. So off we went. As we approached Jackson it was
clear it was
not there. But I decided to check the Jackson Airport/NOAA office to
see what they knew.

They were aware of the TIS stations in Winchester and Richmond that
carried NOAA
and were for use in the event of a nerve agent leak from the Blue
Grass Army Depot
in Richmond, but they knew of no station on 1640. They gave me a list
of towns where there
are low powered NOAA WX transmitters to check and it wasn't in any of
them. On a lark
we went to Richmond Yesterday and the TIS on 1610 is still only
receivable right next
the the emergency center. But there was a different station on 1640.
This one is clearly
connected with the Nerve Agent program and may be in Berea.

Sooner then later I hope to locate both 1640 transmitters.

I will post the main body of this under a new thread.

Terry

On Thu, 30 Aug 2007 14:52:12 -0700, Radium wrote:

Hi:

What is the highest radio frequency used for astronomy? Is it 3,438
GHz?

According to the link below, it is 3,438 GHz:

http://books.nap.edu/openbook.php?re...=11719&page=11

Is 3,438 GHz the highest radio frequency used for astronomy?

No.

Hope This Helps!
Rich

It's "Radium" And His Asking Questions - DOH !
- - - And Cross-Posting to Rec.Radio.Shortwave Again !

In article om,
says...
Hi:

What is the highest radio frequency used for astronomy? Is it 3,438
GHz?

According to the link below, it is 3,438 GHz:

http://books.nap.edu/openbook.php?re...=11719&page=11

Is 3,438 GHz the highest radio frequency used for astronomy?


Thanks,

Radium



Actually, it says 3 THz.
3.4GHz is C band, like satellite TV. Ku band sat TV is 12GHz.
There are many off-the-shelf radio instruments available well above this.

On Aug 31, 8:34 am, John Todd wrote:
In article om,
says...





Hi:

What is the highest radio frequency used for astronomy? Is it 3,438
GHz?

According to the link below, it is 3,438 GHz:

http://books.nap.edu/openbook.php?re...=11719&page=11

Is 3,438 GHz the highest radio frequency used for astronomy?

Thanks,

- - Radium
-
- Actually, it says 3 THz.
- 3.4GHz is C band, like satellite TV. Ku band sat TV is 12GHz.
- There are many off-the-shelf radio instruments
- available well above this.

HELLO - 3,438 GHz or 3.438 THz It Don't Matter.
- - It Ain't Shortwave {High Frequency} Radio - -
.
Please remove Rec.Radio.Shortwave from "Radium's
3,483 GHz Radio Astronomy Posting and Your Replies.
.
Listening to Radio Rebelde right now on 11,655 kHz
{Thats in the 25m Shortwave Band} @ 16:57 UTC
http://www.radiorebelde.com.cu/programacion.htm
Horarios y Frecuencias de Trasmisión de Radio Rebelde
.
Listening to the Beautiful Sounds of Latin Music
and yes it sounds Astronomical to my Ears !
.
Radio Rebelde - Habana Cuba - al Ritmo de la Vida
http://www.radiorebelde.com.cu/
TOH News in Spanish @ 17:00 UTC
.
Redsun RP2100 'portable' AM/FM Shortwave Radio
http://www.radiointel.com/review-redsunrp2100.htm
just using the Whip Antenna S2~S3 with Fair Audio.
.
17:30 UTC out ~ RHF - Twain Harte, CA -USA-
.
.
.. .