Here's an HD radio demo fromm NYC. It starts with WFAN in HD at 00 seconds, next at 00:26 is WADS, which is 72 miles away from my house and runs 3200 watts. It's third adjacent to WFAN and second Adjacent to WOR both of which are running their HD exciters and I am in a null of WADS. WOR follows next at 00:44 after which is WABC at 2:16. WCBS 880 is next at 3:03 into the file. We switch to FM for some demos, first WNYC HD 1, 2 & 3 at 4:01, 4:27 & 514 respectively. Then we listen to WPLJ HD 1, 2 & 3 at 5:47, 6:08 & 6:43. The next demo was recorded from a super radio placed approx 2 feet from my HD radio. First we hear WRKL, 1 KW and 3rd adjacent to WCBS. It starts at 7:25, next is WCBS at 7:31 then WABC at 7:42 and WNYH at 7:43 which is 740 located about 50 miles from me and between two HD stations at 7:10 and 740 KHz. Then WOR at 8:05 and lastly WFAN at 8:29. Notice no IBOC interference as so many have alluded to. We go back to the Sangean for WAWZ which is 60 miles from me at 9:30 into the file. Next is WHCR at 10:11 which was a bit noisy this morning at 90.3 MHz. They run 8 watts and are 25 miles south of me. Followed at 10:55 by a WKTU HD 2 ID and finally at 11:11 is WKXW in Trenton which is 90 miles south of my location. I posted the file in WMA format at 128 Kbps. Hope this gives some insight into what HD sounds like and what the Sangean tuner can do in the NY metro area.
Note that this file contains not only HD radio audio but some distant FM radio signals. Also the effects of HD on analogue radio for those who say you can't tune out the IBOC sideband noise and one low power AM station (of which I'm in the null of) between two local AM IBOCs. Find the URL next to the reason for editing. Otherwise the site won't allow me to post the URL.