• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
Part15

Part15

License Free, legal, low-power radio broadcasting

  • About Us
  • Forums
  • Resources
  • Members
  • Contact Us
  • Log In
Forums
Main Category
temp
Digital Part 15 is ...
 
Notifications
Clear all

Digital Part 15 is Coming

 
Page 4 / 4 Prev
temp
Last Post by Anonymous 12 years ago
46 Posts
2 Users
0 Reactions
3,909 Views
RSS
 Anonymous
(@Anonymous)
Posts: 0
 

Lefty,

LoL ... Of course, digital won't sound as good as AM stereo. If a broadcaster wants the highest fidelity for musical sources, then analog or AM stereo is best.

 

I want to broadcast audio, text, pictures, and even video some day via the MW band ... ๐Ÿ˜‰

From initial experiments, I've mated the ATU from Radio Systems' older I.AM. Radio transmitter with the 30 mW DRMAX-1 transmitter. Currently, the siting of my ATU isn't optimal. The ATU is ungrounded and ~ 9' high on an aluminum pole. Furthermore, a metal-sided house is within 5' of the pole to the south ... ๐Ÿ˜‰ About 1' of the monopole's tip clears the roofline to the southwest and southeast while the southerly direction is completely blocked. The direction to the north is clearest. I can reliably achieve an average SNR of ~ 10 dB in northerly directions for a couple of city blocks. This minimal field intensity currently confines me to a robust configuration consisting of a Main Service Channel (MSC) of 16 QAM and Mode B which allows a bit-rate of ~ 13-14 kbps. Yeah, with the current AAC+ codec, I forgo Spectral Band Replication (SBR), but the audio is still adequate for talk radio. When the xHE-AAC codec (USAC) is finally implemented in DReaM, then I'll be able to broadcast better quality of audio while maintaining lower bit-rates for maximal coverage. I'm sure my current setup can be improved somewhat. Although DReaM doesn't currently employ the USAC codec, it does include the non-standarized Opus codec which I will also be testing. I can even broadcast webpages via radio ... ๐Ÿ˜‰ Thus far, I'm truly delighted with the flexibility afforded me by the DRMAX-1.

 

I plan on uploading pictures and audio in due time. If you would like to hear a source (no copyrights, please) rendered in low bit-rate digital via AAC+, send me some links ... ๐Ÿ˜‰ If possible, I'll also render the source in Opus at higher bit-rate, but the range won't be more than half a city block with my current setup. ๐Ÿ˜‰


 
Posted : 21/11/2014 9:49 pm
Page 4 / 4 Prev
Forum Jump:
  Previous Topic
Next Topic  
Share:
Forum Information
Recent Posts
Unread Posts
Tags
  • 13 Forums
  • 7,740 Topics
  • 63.5 K Posts
  • 71 Online
  • 2,249 Members
Our newest member: electronic
Latest Post: 7 Beatles Misheard Lyrics
Forum Icons: Forum contains no unread posts Forum contains unread posts
Topic Icons: Not Replied Replied Active Hot Sticky Unapproved Solved Private Closed

Primary Sidebar

Online Members

 No online members at the moment

Recent Posts

  • Mark

    RE: 7 Beatles Misheard Lyrics

    Many songs have I heard something other than the actual...

    By Mark , 2 days ago

  • Mark

    RE: 7 Beatles Misheard Lyrics

    Have you heard this?

    By Mark , 2 days ago

  • RichPowers

    Unique AM Transmitter

    Here one I've not seen before. they're $69.50 on eBay, ...

    By RichPowers , 2 days ago

  • RichPowers

    7 Beatles Misheard Lyrics

    As far as I'm concerned this article is ridiculous, I d...

    By RichPowers , 2 days ago

  • Mark

    RE: Newly Discovered Robert Johnson in Stunning Clarity

    @richpowers Sounds good.

    By Mark , 2 days ago

Recent Topics

  • RichPowers

    Unique AM Transmitter

    By RichPowers 2 days ago

  • RichPowers

    7 Beatles Misheard Lyrics

    By RichPowers 2 days ago

  • RichPowers

    Public Domain Feature Films about Radio

    By RichPowers 3 days ago

  • RichPowers

    Speed Limit 17.3mph

    By RichPowers 5 days ago

  • ArtisanRadio

    Artisan Radio Pivots Again

    By ArtisanRadio 5 days ago

Topic Tags

  • Carl Blare3
  • KDX RADIO3
  • WINDOZE3
  • Transmitter2
  • Radio Phvern2
  • station upgrade2
  • archive.org2
  • playlist2
  • Zara Radio2
  • Carrier Current1
View all tags (74)

Copyright © 2026 ยท Part15.org ยท Log in

โ€นโ€บร—

    โ€นโ€บร—