Why does HD2 repeatedly cut out?

Why does the hd2 radio transmission repeatedly, sometimes multiple times per hour, cut out?

I have a strong signal at home. Signal level is not an issue. It even cuts out driving along 490 in the shadow of the towers.

Simple question...

Is it an issue with WXXI or an issue with the Hybrid Digital format?

Can WXXI 'interact'?

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HD Radio and How it works...

WXXI and many other stations in the Rochester area broadcast their radio programming in HD using 'In Band - On Channel' (IBOC) technology. WXXI Broadcasts using HD1 (Main WXXI-FM simulcast) and HD2 (WXXI-AM simulcast).

In the HD receiver when receiving any HD1 service, should the digital stream fade, the audio output will fade or blend between the analog programming and the digital programming because the analog transmission is some what more robust. In the case of the HD2 service, there is no redundant analog service to 'fade or blend' to restore the loss of the digital service. So, in the case of HD2 there is no recovery from a reception 'drop-out' as is available for the HD1 service.

We do constantly monitor the WXXI HD Radio services and strive to ensure good reception.

kent, thank you for your

kent,

thank you for your response. however, it really does not answer the question "Why does HD2 repeatedly cut out?"

for example, during a brief listening session this evening, January 16, 2011 hd2 cut out and then returned with surprising frequency that makes it difficult to follow a news story:

Cut out Returns
5:19:24 5:20:30
5:29:34 5:29:54
5:39:45 5:40:10
5:49:24 5:49:40
6:04:35 6:04:49
6:07:17 6:07:29

these timings were generated using a sony xdr-f1hd tuner connected to an external roof mounted omnidirectional antenna. for your information, that same antenna system is also connected to a recently aligned tandberg 3001a tuner. using that tuners signal meter, i see that wxxi fm is producing ~10,000 microvolts of signal level. i am located 2 miles from the tower.

these hd2 cutouts are also experienced at the same times using another hd tuner, a sangean hdt-1x connected to an indoor antenna. During normal operation, the sangean reports that your CNR is ~65 db. When it cuts out, it drops quickly to ~49 db, and then returns to ~65db

I used the sangean as a control to verify that the sony was not malfunctioning. A different (smaller) antenna was used to see if the frontend was being overloaded.

Given that I am able to reproduce this problem on 2 home tuners with more than adequate signal, and that your team monitors the signal:

is your team seeing the same issue or not?
is this expected behavior?

I see there has been no

I see there has been no response to the 2 questions posed above:


Given that I am able to reproduce this problem on 2 home tuners with more than adequate signal, and that your team monitors the signal:

is your team seeing the same issue or not?
is this expected behavior?

hd2 has been completely unusable this weekend. it has been cutting out so frequently, which results in listeners missing minor details, such as did those nuclear reactors in japan melt down? when 91.5 hd cuts out, the music 'burps' as the two signals are not synced. not what mozart had in mind.

i've attempted to engage wxxi in a meaningful conversation, provide technical details that may help to identify if i am alone in having this problem or assist in wxxi staff in correcting a problem on their end, or a problem with your transmitter.

given the lack of response, i can only assume that there is a problem on wxxi's end, a problem that they are not willing to acknowledge. i have no idea why.

i am done. good bye

a former member

Hi...out in Clarkson (in

Hi...out in Clarkson (in western Monroe County) I'm having no luck with either HD-1 or -2 signal. Not sure what the problem is.