[sci.electronics] Good FM and TV Dxing

aboulang@bbn.com (Albert Boulanger) (06/28/89)

Undoubtedly due to the increase sunspot activity last week, I was able
to pick up some unusually distant TV stations. (See the front cover
story of Time this week. The auroral display in March was seen as far
as Key West.) I am in the Boston area, and here are some
of the stations that I picked up:


Ch 13 Maine station
Ch 10 WTEN Albany NY (on Ch 19 for some reason)
Ch 26 New London (CT?)
Ch 31 Vermont Station
Ch 41 ?
Ch 51 ?
Ch 61 ?

This was using the antenna that came with the TV.

I haven't tried to DX FM stations, but I bet there will be some good
listening here.

Happy DXing,
Albert Boulanger
BBN Systems & Technologies Corp.
aboulanger@bbn.com

billk@hpsad.HP.COM (Bill Katz) (06/30/89)

	Your reception of "WTEN", channel ten from Albany, NY on channel 19
was no fluke; However it was really WCDC, channel 19.  WCDC is located on 
Mount Greylock in Adams MA (Near the notheast corner of the state, and also
the highest elevation in MA, 3491').  WCDC is owned by the the people who
own channel 10, and always broadcasts the same material.  It isn't just
a small translator, but a full-fledged station, with about 20KW out (about
200KW ERP).   And Mt. Greylock is an excellent VHF location...  A group
I've been associated with for many years uses this as the site for contesting
the ARRL VHF and UHF contests every summer, and we've set overall records
many times from that spot.  Of course now that I live in California, I don't
get back for radio contests quite as often.

Bill Katz
Hewlett-Packard				e-mail:	billk@hpsad.hp.com
Signal Analysis Division
1212 Vally House Dr.
Rohnert Park, CA 94928

wtm@neoucom.UUCP (Bill Mayhew) (07/04/89)

My besxt TV DX experience was back in the spring of 1972, watching
the NBC Mystery Movie (Columbo) on what I thought was channel 3,
WKYC, in Cleveland; I live/lived just outside of Akron, Ohio, which
is about 20 miles from Cleveland.  Good reception on channel 3 at
that distance is not unexpected.

I switched the TV on at about 8:00 pm just as the Mystery Movie was
starting and thought nothing more of it until the station broke
from the network at about 20 minutes after to do local commercials.
It struck me as odd that I had never heard of any of the stores
mentioned in the commercials.  Later on, the station ID'ed itself
as (I think) WKEA, Tulsa OK, channel 2!

What had happened is that somebody had bumped the fine tuning so
that the set, a portable Magnavox B&W, was actually picking up 2
when the dial said 3.  The only antenna was about a 0.75 meter
single rabbit ear on the back of the set, and reception was
asbolutely letter perfect.  Suddenly at about 50 minutes into the
movie, the reception from Tulsa stopped almost as if somebody had
turned off a switch.

I think the effect was sporadic E skip or ducting, which occurs
mainly in the spring and early fall seasons.  Apparenlty
temperature inversions can create air layers with the correct RF
dielectric characteristics to serve as VHF waveguides of a sort.
In the case of the TV skip, it was quite dramatic.

The second best VHF DX I heard was when a guy with a 5 watt 2 meter
rig in a car talked into the Cuyaghoga Falls W8VPV repeater from
Buffalo NY; that's around 300 mi, I think.  That was just after
Christmas, an unusual time for that sort of skip.

My own best DX was using a cheap car CB with a short whip antenna.
I was on I-71 near Mansfield, OH.  The radio was acting up, so I
tuned to ch. 11, which as a popular local channel.  I asked for a
radio check, and a person in Cincinatti replied.  That was a couple
hundred mile QSO, but then 27 MHz doesn't exactly qualify as VHF
either.

Bill
wtm@impulse.UUCP

dya@unccvax.UUCP (York David Anthony @ WKTD, Wilmington, NC) (07/05/89)

In article <1674@neoucom.UUCP>, wtm@neoucom.UUCP (Bill Mayhew) writes:

> My besxt TV DX experience was back in the spring of 1972, watching
> the NBC Mystery Movie (Columbo) on what I thought was channel 3,
> WKYC, in Cleveland; I live/lived just outside of Akron, Ohio, which

	This is pretty decent.

	My experiences with TV DX are fairly rare, though I have 
had some strange occurrences with "ducting" at VHF.  Probably the
most predictable (for us) is KPRC Houston, which (with depressing
regularity) interferes with our enjoyment of WFMY-TV Greensboro.
There are periods of up to 5 minutes at a time where the video of
KPRC completely overtakes that of WFMY; however, the aural carrier
of KPRC never makes it.

	Much more rare are observations on channel 3.  However,
lately we've seen a channel 3 with the same offset as WBTV causing
great interference; we know it is an NBC affiliate in the same
or Central time zone.  This narrows down the choices considerably.

	During the skip season, putting the TV set on 4,5,or 6
(on which there are no local stations) doesn't seem to pull in
anything, except once we saw some strange Spanish-speaking program
in black-and-white, shot with aincent image orthicon cameras (on
channel 6) .

	My wife claims to have heard WEZC Charlotte, NC (104.7 mHz)
for about 15 minutes, while stopped at a rest area on I-95 around
Richmond, VA.   Once, some guy called me from Metter, GA (when I
worked at WPEG Concord, NC) with a request, though I don't know that
is authentic...

	Band I skip is common.  Anyone have any 174-216 mHz or  
470 mHz + TV DX? I've never observed any...

York David Anthony
DataSpan, Inc

cmoore@oahu.prime.com (Chris Moore) (07/05/89)

Speaking of TV and FM DX'ing, I've got a couple of good ones.  Around 1975,
a friend of mine got a Florida channel 2 station for about 20 minutes or so.
Pretty good considering we were in southern RI. 

Also, for FM DX'ing, a couple of year's ago, I was at another friend's house
who has a scanner.  The scanner picked up a police dept. in Texas.  What was
really wild about that one, was that the town in Texas was having a tornado
at the time and tracking the funnel via radio.  It was really wild! It only
lasted about 5 minutes though.

Chris Moore     Hardware Engineer	CV/Pr1me Computer, Inc.
cmoore@oahu.prime.com		My opinions are my own, not Prime's

hakanl@loglule.se (H}kan Lennest}l) (07/06/89)

	Yes ! Band I skip is pretty common, at least during the
	summer months here in northern Scandinavia. 
	Here in Lule} is it possible to see Icelandic TV on channel
	3 and 4, almost on a regular bases. So far this season it has
	happened to me (just by chance) a couple of times.
	It occurs, normally, late at night when our national broadcasting
	company turns their local transmitter off, and when the Icelanders
	still are transmitting.
	The quality is, of course, unpredictable and fades up and down.
	But then the distance is almost 3000 Km...

	/ H}kan

msmith@topaz.rutgers.edu (Mark Robert Smith) (07/08/89)

I've got a TV DX I'd like to identify.  During the last two
thunderstorms, I have had interference on Channel 2 (WCBS-TV, NYC)
from an unknown signal on 3.  When I try to tune in 3, it comes in
worse than it does as a shadow on 2.  I live in Tenafly, NJ, just over
the river from NYC, slightly North of the Bronx.  The best ID I could
get was that it was broadcasting a baseball game around 8:30-8:45 pm
EDT on Friday 7/7/89.  I suppose it could be another channel 2.

Can anyone identify this?

Mark
-- 
Mark Smith     |  "Be careful when looking into the distance,       |All Rights
61 Tenafly Road|that you do not miss what is right under your nose."| Reserved
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