michael@fe2o3.UUCP (Michael Katzmann) (09/06/89)
We have been operating Television Point to point links across the U.S. for
a number of years and have noticed a puzzeling interference on 2.5 GHz
channel 8A (2454.5 MHz).
The Interference is irregular in form (i.e. doesn't look to be
intelligently modulated), it covers about 10 MHz, varies in intensity
and is noticeable almost everywhere we go across the U.S. and Canada.
Has anybody got any ideas what we have here? Does anyone
know if there is are solar radio emissions at this frequency?
Any help would be appreciated!
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email to
UUCP: uunet!mimsy!{arinc,fe203}!vk2bea!michael
_ _ _ _
Amateur | VK2BEA (Australia) ' ) ) ) / //
Radio | G4NYV (United Kingdom) / / / o _. /_ __. _ //
Stations| NV3Z (United States) / ' (_<_(__/ /_(_/|_</_</_
Michael Katzmann
Broadcast Sports Technology.
2135 Espey Ct. #4
Crofton Md. 21114 USA
Ph: +1 301 721 5151dya@unccvax.UUCP (York David Anthony @ WKTD, Wilmington, NC) (09/06/89)
In article <221@fe2o3.UUCP>, michael@fe2o3.UUCP (Michael Katzmann) writes: > We have been operating Television Point to point links across the U.S. for > a number of years and have noticed a puzzeling interference on 2.5 GHz > channel 8A (2454.5 MHz). 2450 +/- 50 Mhz is one of the part 18 ISM channels authorised by the FCC. I always thought that microwave ovens operated at 2460 Mhz but could be wrong. Chances are, its some industrial, scientific, or medical application in common use wherever people are found..... It's also listed as "radiolocation" in part 2 of the rules, perhaps some kind of radar... York David Anthony DataSpan, Inc
kencr@haddock.ima.isc.com (Kenny Crudup) (09/06/89)
In article <221@fe2o3.UUCP> michael@fe2o3.UUCP (Michael Katzmann) says:
We have .... noticed a puzzling interference on 2.5 GHz
channel 8A (2454.5 MHz).
------
The Interference is irregular in form (i.e. doesn't look to be
intelligently modulated), it covers about 10 MHz, varies in intensity
and is noticeable almost everywhere we go across the U.S. and Canada.
Michael Katzmann
Microwave ovens?? :-)
--
Kenneth R. Crudup, Contractor, Interactive Systems Co.(386/ix), Cambridge MA
Phone (617) 661 7474 x238
Bensonhurst, NYC - Howard Beach '89. Kinder, gentler huh? Right!!
{encore, harvard, spdcc, think}!ima!haddock!kencr kencr@ima.ima.isc.comgnome@oliveb.olivetti.com (Gary) (09/07/89)
From article <221@fe2o3.UUCP>, by michael@fe2o3.UUCP (Michael Katzmann): > We have been operating Television Point to point links across the U.S. for > a number of years and have noticed a puzzeling interference on 2.5 GHz > channel 8A (2454.5 MHz). Isn't that near the emission frequency for Hydrogen? I remember seeing that note on a spectral chart once and wondered what, if anything, appears at that frequency. Gary
matthew@sunpix.UUCP ( Sun Visualization Products) (09/15/89)
In article <221@fe2o3.UUCP> michael@fe2o3.UUCP (Michael Katzmann) writes: | |We have been operating Television Point to point links across the U.S. for |a number of years and have noticed a puzzeling interference on 2.5 GHz |channel 8A (2454.5 MHz). | | The Interference is irregular in form (i.e. doesn't look to be |intelligently modulated), it covers about 10 MHz, varies in intensity |and is noticeable almost everywhere we go across the U.S. and Canada. | | Has anybody got any ideas what we have here? Does anyone |know if there is are solar radio emissions at this frequency? | | Any help would be appreciated! Hint: Household device used to heat items by rf radiation at the resonant frequency of water molocules. |--------------------------------------------------------------------- |email to |UUCP: uunet!mimsy!{arinc,fe203}!vk2bea!michael | _ _ _ _ | Amateur | VK2BEA (Australia) ' ) ) ) / // | Radio | G4NYV (United Kingdom) / / / o _. /_ __. _ // | Stations| NV3Z (United States) / ' (_<_(__/ /_(_/|_</_</_ | |Michael Katzmann |Broadcast Sports Technology. |2135 Espey Ct. #4 |Crofton Md. 21114 USA | |Ph: +1 301 721 5151 -- Matthew Lee Stier | Sun Microsystems --- RTP, NC 27709-3447 | "Wisconsin Escapee" uucp: sun!mstier or mcnc!rti!sunpix!matthew | phone: (919) 469-8300 fax: (919) 460-8355 |