Is your station ready for hybrid radio?

What is being checked

• i
  info: KRCU - CAPE GIRARDEAU, MO

  From the NRSC list: 90.90 MHz, PI code 3D2C, FCC facility 61212.
• i
  info: RadioDNS lookup name

  09090.3d2c.3a0.fm.radiodns.org (frequency 90.90 MHz, PI 3D2C, country code 3a0)

1. RadioDNS registration

• ✓
  pass: Registered

  09090.3d2c.3a0.fm.radiodns.org points to the station's authoritative domain: radiodns.prss.org

2. Service discovery (SRV records)

• i
  info: _radiospi._tcp.radiodns.prss.org: not published
• ✓
  pass: _radioepg._tcp.radiodns.prss.org published

  priority 10, weight 60, port 80 -> radiodns.prss.org [target is an alias of contentdepot.prss.org]
• !
  warn: SRV target radiodns.prss.org is a CNAME alias

  DNS rules (RFC 2782) say an SRV record should point at a name that has address records directly, not at an alias. Many resolvers cope, some do not.

  What to do: Give radiodns.prss.org its own A/AAAA record (or point the SRV record at the real host name).
• !
  warn: Only the older _radioepg record is published

  What to do: Add _radiospi._tcp.radiodns.prss.org 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://radiodns.prss.org/radiodns/spi/3.1/SI.xml answered

  2109 ms, 261,655 bytes
• ✓
  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.
• ✓
  pass: The file follows the official SI schema (current (3.4/3.5))

  Validated against the schema published by WorldDAB/RadioDNS.

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

4. Your station in the file

• i
  info: 76 services in the file
• ✓
  pass: Station found: Grauel 1 Port A

  Matched on bearer fm:3a0.3d2c.09090
• !
  warn: No short name (up to 8 characters)

  What to do: Receivers show these names; add both.
• ✓
  pass: Medium name: Grauel 1 Port A
• ✓
  pass: Long name: KRCU NPR Receiver 1 Channel 1
• ✓
  pass: Short description present

  KRCU's Mission is to serve the public interest by providing the highest quality public radio programming to Southeast Missouri and Southern Illinois.
• ✓
  pass: Long description present

  KRCU's Mission is to serve the public interest by providing the highest quality public radio programming to Southeast Missouri and Southern Illinois. The programming is consistent with the varied interests, lifestyles...
• i
  info: No keywords

  Optional.
• ✓
  pass: 1 link

  https://www.krcu.org/#stream/0
• ✓
  pass: The <radiodns> element matches the registration

  fqdn radiodns.prss.org, service identifier 0000000000000441

5. Logos

• ✓
  pass: All five standard logo sizes are listed
• !
  warn: Logos have 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.
• i
  info: Logo checks limited

  Only the first logos were fetched.
• !
  warn: 12 logos downloaded and checked

Preview	Declared	Actual	Size	Result
	128x128	128x128	4,094 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/277816662_10160364057002164_338097061308948001_n%20-%20Copy_172813768.png
	112x32	112x32	1,964 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/277816662_10160364057002164_338097061308948001_n%20-%20Copy_172814652.png
	170x170	170x170	6,559 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/277816662_10160364057002164_338097061308948001_n%20-%20Copy_172813766.png
	86x48	86x48	1,966 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/277816662_10160364057002164_338097061308948001_n%20-%20Copy_172814662.png
	288x162	288x162	14,513 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/277816662_10160364057002164_338097061308948001_n%20-%20Copy_172814650.png
	74x41	74x41	1,441 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/277816662_10160364057002164_338097061308948001_n%20-%20Copy_172814664.png
	320x240	320x240	18,203 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/277816662_10160364057002164_338097061308948001_n%20-%20Copy_172814656.png
	1920x1080	1920x1080	75,252 B	75 kB (under 50 kB recommended) http://radiodns.prss.org/radiodns/spi/3.3/si/img/277816662_10160364057002164_338097061308948001_n%20-%20Copy_172814660.png
	220x48	220x48	3,894 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/277816662_10160364057002164_338097061308948001_n%20-%20Copy_172814658.png
	1024x768	1024x768	67,836 B	68 kB (under 50 kB recommended) http://radiodns.prss.org/radiodns/spi/3.3/si/img/277816662_10160364057002164_338097061308948001_n%20-%20Copy_172813758.png
	1600x1200	1600x1200	74,561 B	75 kB (under 50 kB recommended) http://radiodns.prss.org/radiodns/spi/3.3/si/img/277816662_10160364057002164_338097061308948001_n%20-%20Copy_172814654.png
	600x600	600x600	51,467 B	51 kB (under 50 kB recommended) http://radiodns.prss.org/radiodns/spi/3.3/si/img/277816662_10160364057002164_338097061308948001_n%20-%20Copy_172813760.png

6. Transmitters and streams

• ✓
  pass: FM bearer fm:3a0.3d2c.09090

  cost 20
• i
  info: Other bearer: fm:1a0.1926.08870

  Not checked by this tool.
• i
  info: Other bearer: fm:3a0.3ff5.08890

  Not checked by this tool.
• i
  info: No internet stream listed

  Optional, but without one receivers cannot switch from FM to an online stream.