Originally Posted by Bismarck440
Fun going over this every so often...
Back in analog, I've pulled the Miami, Houston, New Orleans, KDFW (Dallas), Possibly a Tuscon 4.. unsure very faintly but whatever it was in Mountain time, plus either 2 or 4 from Oklahoma.... the day of the A to D conversion, the last analog signal I saw that day was KDFW.
Longest DX digital was 55 (virtual) out of Fort Wayne (pretty strong signal)... was the day of the conversion also. Probably a combo of good tropo & signal tweaking by ther stations, I received WCDN that day (all day), & that was the last I ever seen it as they likely did not have it's northeast null in place yet, or were running at slightly higher power.
E-skip happens very frequently on low-VHF channels and very very rarely on high-VHF channels. I've seen some people who've logged some e-skip channels from around 900-1500 miles and even double e-skip for up to 3000 miles. In the analog era, I just remember seeing the squiggly lines begin to interfere with a local channel until it grew in intensity. While at the family cabin up in Ontario, I remember frequently seeing Florida channels interfere with locals, like WJXT channel 4 in Jacksonville (which had an unforgettable colorful logo).
I personally wouldn't mind if channels were forced to go back to the low-VHF channels during the spectrum repacking, because it would make for some interesting DXing conditions. But catching a digital signal on low-VHF channels 2-6 is more difficult. The channel width is 6 Mhz, and if there's any significant interference within that spectrum, it can cause total loss of picture. During e-skip, it's common to only receive a portion of that 6 Mhz spectrum, so in the analog days, you could sometimes receive a picture with no sound and vice versa. But with digital, you either get it all or you get nothing.
Last year, I set up an FM antenna with a good tuner at my home. During that summer I monitored the e-skip conditions. I found a current map which listed where it would occur, and the maximum e-skip frequency. From using that map, I was able to log many FM radio stations from various cities in Texas, Mississipi, and Louisiana. I would intentionally point my antenna in the direction of a sporadic e-cloud which listed a high frequency. The map is very accurate. Here is the website I used... http://www.dxmaps.com/spots/map.php?...XC=N&HF=N&GL=N
Once, probably 15 years ago, I logged analog UHF Fox 32 from Chicago using an indoor antenna. I also logged a UHF station from Lexington Kentucky. It's very rare to see tropospheric ducting that extreme around here, but it does happen a lot down near the Gulf of Mexico and other bodies of water. In fact, I've heard of UHF stations traveling from Hawaii to California due to the common tropospheric ducting that occurs between those two states, even though it's a couple thousand miles.