Is your station ready for hybrid radio?

What is being checked

• i
  info: WKZU - IUKA, MS

  From the NRSC list: 104.90 MHz, PI code 71AE, FCC facility 59614.
• i
  info: RadioDNS lookup name

  10490.71ae.7a0.fm.radiodns.org (frequency 104.90 MHz, PI 71AE, country code 7a0)

1. RadioDNS registration

• ✓
  pass: Registered

  10490.71ae.7a0.fm.radiodns.org points to the station's authoritative domain: jcmedia.dev

2. Service discovery (SRV records)

• i
  info: _radiospi._tcp.jcmedia.dev: not published
• ✓
  pass: _radioepg._tcp.jcmedia.dev published

  priority 0, weight 0, port 80 -> jcmedia.dev
• !
  warn: Only the older _radioepg record is published

  What to do: Add _radiospi._tcp.jcmedia.dev on port 443 as well, so receivers that use HTTPS can find the SI file.
• i
  info: _radiovis._tcp: not published

  Slideshow/visuals (STOMP) - optional, only needed for a live slideshow service.
• i
  info: _radiopush._tcp: not published

  Slideshow/visuals (Server-Sent Events) - optional, only needed for a live slideshow service.
• i
  info: _radiovis-http._tcp: not published

  Slideshow/visuals (HTTP) - optional, only needed for a live slideshow service.

3. Service Information file (SI.xml)

• ✓
  pass: HTTP endpoint http://jcmedia.dev/radiodns/spi/3.1/SI.xml answered

  219 ms, 4,713 bytes
• !
  warn: The SI file is served through a redirect

  http://jcmedia.dev/radiodns/spi/3.1/SI.xml -> https://jcmedia.dev/radiodns/spi/3.1/SI.xml

  What to do: Some receivers do not follow redirects. Serve the file directly at this address if you can.
• ✓
  pass: Content type is application/xml
• !
  warn: SI file has no caching headers

  What to do: Add Cache-Control: max-age (for example 86400 for 24 hours). Without it, receivers guess - and some ignore the content.
• !
  warn: The file does not strictly follow the official SI schema (3.1)

  line 11: Element 'mediaDescription': This element is not expected.
  line 37: Element 'mediaDescription': This element is not expected.
  line 61: Element 'mediumName': [facet 'maxLength'] The value has a length of '20'; this exceeds the allowed maximum length of '16'.
  line 66: Element 'mediaDescription': This element is not expected.

  What to do: Many receivers are forgiving, but strict ones may ignore a file that does not match the schema. RadioDNS's SI tool (si.radiodns.org) can rebuild a correct file.

Guides: Make an SI file accessible (PDF) · Build an SI file with RadioDNS's tool

4. Your station in the file

• i
  info: 2 services in the file
• ✓
  pass: Station found: Kudzu 104.9 FM

  Matched on bearer fm:7a0.71ae.10490
• ✓
  pass: Short name: WKZU
• ✓
  pass: Medium name: Kudzu 104.9 FM
• i
  info: No long name

  Optional.
• ✓
  pass: Short description present

  Kudzu 104.9 plays Classic Country
• i
  info: No long description

  Optional (up to 1200 characters).
• i
  info: No keywords

  Optional.
• i
  info: No links

  Optional: a website or contact link.
• ✓
  pass: The <radiodns> element matches the registration

  fqdn jcmedia.dev, service identifier spi

5. Logos

• ✓
  pass: All five standard logo sizes are listed
• ✓
  pass: Logos can be cached (7 days)
• !
  warn: 5 logos downloaded and checked

Preview	Declared	Actual	Size	Result
	32x32	32x32	3,735 B	OK http://jcmedia.dev/kudzu32x32.png
	112x32	112x32	5,556 B	OK http://jcmedia.dev/kudzu112x32.png
	128x128	128x128	23,350 B	OK http://jcmedia.dev/kudzu128x128.png
	320x240	320x240	80,163 B	80 kB (under 50 kB recommended) http://jcmedia.dev/kudzu320x240.png
–	600x600	600x600	181,661 B	182 kB (under 50 kB recommended) http://jcmedia.dev/kudzu600x600.png

6. Transmitters and streams

• ✓
  pass: FM bearer fm:7a0.71ae.10490

  cost 0
• ✕
  fail: Stream not reachable: https://ice5.securenetsystems.net/WKZUFM

  Empty reply from server

  What to do: Receivers switch to this stream when FM fades; it must be reachable.