iyiyi said:
N1WVQ said:
94.1's HD was off as of about 13:00. WHJJ had trouble decoding about 2 miles from the transmitter. When it was HD, 550 would never come in although the radio knew HD was there. Same thing now for 1030.
No problemo. 94.1 analog and 94.1 HD are separate entities. I think the main difficulty we are having in trying to understand HD boils down to context and perspective. The actual HD transmitter powers are: 550 -- ten watts; 630, 790 and 920 -- fifty watts. 1290 HD is 100 watts and the mighty 1030 is 500 watts. Again, this is total transmitted DIGITAL HD output for each station. 94.1 HD (500w erp) and 92.3 HD (370w erp) are at 1% analog carrier levels -- same as AM HDs at 1% analog power.
I believe 550 was quite the HD blowtorch for TEN watts! A 1630 DOT traffic station is 10 watts.
Also, for a tangible measure of comparison of what "10 db" is: 1030 transmitting from Hull at 100kw (we'll give them their DA gain) versus 1030 when doing 10kw from Brighton.
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With the Boston Acoustics radio in East Providence, about 2 miles from WHJJ, WHJY, WBRU, WPRO, WPMZ; 5-10 miles from WPRO-FM, WWLI, WWBB, WSNE-FM, ex-WDDZ, etc., the results were as I stated. I'm glad 550's buzz is gone because it used to trip up the seek function & stop the radio on 560 when tuning up from 550. As for 1290 killing their buzz, I'm happy about that too. When ANY A.M. stops buzzing, I'm happy to hear that.
Now, back to the signal levels. WHJY's HD iboc should come in the best in East Providence. That's the station that seems to have it off the most. In Taunton, the radio can't pick up any HD signals reliably. I say that because WBZ still provides enough of an HD iboc signal to the radio to make it realize something's there but it can't do anything with the signal. In all fairness, DTV can hardly be received there either. Only WLWC/22, er, "28", can be picked up. Nothing from Rehoboth.