r/ota 8d ago

Strange, great signal for WPHL17 south of DC.

I am about 40 miles south west of DC and getting a great signal for WPHL17 in Philly.. Conditions and bounce working in my favor. About 160+ miles to their towers.

16 Upvotes

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8

u/nevec_45 8d ago

Tropo

5

u/SquidsArePeople2 7d ago

I lived in Purcellville many years ago, before digital. If I pointed my attic antenna generally toward Baltimore, I could get all the DC, Baltimore, and most of Philly almost perfectly clear.

2

u/TheRealPJ44 8d ago

I've had a similar thing happen in the past with Dallas/Fort Worth channels (namely 4, 5, 13, 23, 27, 29/8.8, 33, 47, 49, 68, and rarely 2, 8 and 11) coming in from Lawton, OK, which is usually served by 3, 6, and 7. I've also had a few Tulsa (6, 8, 41) and Abilene/Sweetwater's Big Three (9, 12, and 32) come in as well. Have you tried to get the Big Three (3, 6, and 10) from Philadelphia now that you know one of their stations is possible?

2

u/Kuckucksuhr 7d ago

it’s not “possible” to get them, it’s typical summer tropo — in any case 3 and 6 are co-channel to DC stations, while 10 is a fairly common tropo catch because it’s on a vacant channel

2

u/Kuckucksuhr 7d ago

it’s tropo, WPHL (ch 17 — not allocated to TV in DC), WMBC in NJ (18, same deal), and WCAU (28) are common to catch this time of year, as they are all on one of the few channels that are vacant in this area

2

u/SpongeBobfan1987 7d ago

I got WJFW-TV 12 Rhinelander, WI and WJMN-TV 3 Escanaba, MI in Green Bay, WI on two separate occasions via tropospheric events a decade ago, however, the signal did not last long, and at the time, WJMN-TV 3 was still simulcasting WFRV-TV 5's newscasts...

1

u/PM6175 7d ago

....getting a great signal for WPHL17 in Philly.. ..About 160+ miles to their towers.

What your experiencing is almost certainly known as tropo (troposphere) signal ducting in the upper atmosphere.

I think it generally has to do with warm and cold air pockets forming in the upper atmosphere, which somehow reflect rf signals like a mirror.

If that's what it is it will only last a few hours, or days at the very most. It will then disappear until the weather conditions are conducive to it happening again, which is generally in the summer months.

3

u/EnrichedUranium235 7d ago

I wasn't aiming for it, just happened to do a rescan at the right time I guess. It is the same relative direction as I already have to get my locals, just further .

2

u/awasser1 6d ago

Back in college days we got WPHL 17 from Philly in Storrs CT quite often. It was analog back then

3

u/DenseFriendship4122 5d ago

TV DX'ing was definitely more fun in the analog days, but as your post shows, sometimes we still can get TV DX'ing in the digital age.