archive2009-14.pdxradio.com » Portland Radio

  1. DarkStar
    Member

    http://www.radioworld.com/TabId/64/Default.aspx?ArticleId=272609
    http://www.radioworld.com/TabId/64/Default.aspx?ArticleId=272612

    For those wanting to try to DX from Portland, KRKO 1380 will be all HD Radio from 9:30am until 4:30pm on Saturday, 10/4, and KKXA 1520 from 9:30am until 4:30pm on Sunday, 10/5.

    What's interesting is that apparently when transmitting 100% digital on AM the Ibiquity encoder will allow one high-fidelity (music) channel and one low-fidelity (talk) channel, or four low-fidelity (talk) channels. I don't know if they'll be testing that functionality this weekend...

    Posted on October 1, 2014 - 08:41 AM #
  2. Anonymous

    I'll give them a try from Eugene.

    Posted on October 1, 2014 - 04:37 PM #
  3. jr_tech
    Member

    Well, 1520 is a "no go" from the Portland area because of KGDD, but I will give 1380 a try. Right now they are operating in hybrid Digital/Analog mode and I am getting indication of HD but no lock-in on the F1HD. I would guess that "Full Digital" mode will increase the Digital signal considerably.

    Posted on October 1, 2014 - 04:55 PM #
  4. Anonymous

    I haven't played around with AM for a long time but am trying it now. Unfortunately I only have a cheap loop antenna for AM. Well 1380 is a dud for me; 1520 is identifiable.

    Not to derail the thread, but surprisingly (or not) I'm getting KFBK 1530 from Sacramento quite well, with HD blinking but no lock yet. Even getting some usable RBDS/RDS. Wikipedia says KFBK "boasts the highest signal strength of any AM station in the United States." True?

    EDIT: I'm also getting a listenable signal from KSL 1160 Salt Lake City! With HD flashing.

    Posted on October 1, 2014 - 06:02 PM #
  5. jr_tech
    Member

    "EDIT: I'm also getting a listenable signal from KSL 1160 Salt Lake City! With HD flashing."

    KSL HD lock (for a few minutes) from Hillsboro a couple of years ago, using small loops:

    http://feedback.pdxradio.com/topic/hd-radio-happenings/page/2#post-136225

    Posted on October 1, 2014 - 07:02 PM #
  6. Anonymous

    Were those AM loops in series with each other? Or parallel?

    Posted on October 1, 2014 - 07:29 PM #
  7. jr_tech
    Member

    The loops were not connected to each other... the small loop was connected as normal to the F1HD and the larger loop was just inductively coupled to it. The larger loop was then tuned while watching the "meter" on the F1HD.

    Posted on October 1, 2014 - 07:48 PM #
  8. semoochie
    Member

    "Well, 1520 is a "no go" from the Portland area because of KGDD..." Then again, what would be the difference(reception wise)between receiving a digital signal from somewhere else and one generated by KGDD?

    Posted on October 1, 2014 - 10:01 PM #
  9. Anonymous

    http://photos.xdrguy.com/GalleryThumbnails.aspx?gallery=4548828

    Got an HD lock on KSL just long enough to get a photo (and a video which I would need to edit first). "RG$Q" is garbled for some reason.

    Posted on October 1, 2014 - 10:15 PM #
  10. jr_tech
    Member

    "Not to derail the thread, but surprisingly (or not) I'm getting KFBK 1530 from Sacramento quite well, with HD blinking but no lock yet. Even getting some usable RBDS/RDS. Wikipedia says KFBK "boasts the highest signal strength of any AM station in the United States." True?"

    It would certainly seem so:
    http://www.fybush.com/sites/2005/site-051028.html

    "Got an HD lock on KSL just long enough to get a photo (and a video which I would need to edit first). "RG$Q" is garbled for some reason."

    Cool!!! what is your tuner model?

    Posted on October 1, 2014 - 10:17 PM #