Is your station ready for hybrid radio?

What is being checked

• i
  info: KSPK-FM - WALSENBURG, CO

  From the NRSC list: 102.30 MHz, PI code 4118, FCC facility 39677.
• i
  info: RadioDNS lookup name

  10230.4118.4a0.fm.radiodns.org (frequency 102.30 MHz, PI 4118, country code 4a0)

1. RadioDNS registration

• ✓
  pass: Registered

  10230.4118.4a0.fm.radiodns.org points to the station's authoritative domain: radiodns.kspk.com

2. Service discovery (SRV records)

• ✓
  pass: _radiospi._tcp.radiodns.kspk.com published

  priority 10, weight 10, port 443 -> radiodns.kspk.com
• ✓
  pass: _radioepg._tcp.radiodns.kspk.com published

  priority 10, weight 10, port 80 -> radiodns.kspk.com
• 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: HTTPS endpoint https://radiodns.kspk.com/radiodns/spi/3.1/SI.xml answered

  113 ms, 3,542 bytes
• ✓
  pass: The HTTPS certificate is valid
• ✓
  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 49: Element 'bearer', attribute 'call_sign': The attribute 'call_sign' is not allowed.
  line 50: Element 'bearer', attribute 'call_sign': The attribute 'call_sign' is not allowed.
  line 51: Element 'bearer', attribute 'call_sign': The attribute 'call_sign' is not allowed.
  line 52: Element 'bearer', attribute 'call_sign': The attribute 'call_sign' is not allowed.
  line 53: Element 'bearer', attribute 'call_sign': The attribute 'call_sign' is not allowed.
  line 54: Element 'bearer', attribute 'call_sign': The attribute 'call_sign' is not allowed.
  line 55: Element 'bearer', attribute 'call_sign': The attribute 'call_sign' is not allowed.

  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.
• ✓
  pass: HTTP endpoint http://radiodns.kspk.com/radiodns/spi/3.1/SI.xml answered

  141 ms, 3,542 bytes
• !
  warn: The SI file is served through a redirect

  http://radiodns.kspk.com/radiodns/spi/3.1/SI.xml -> https://radiodns.kspk.com/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 49: Element 'bearer', attribute 'call_sign': The attribute 'call_sign' is not allowed.
  line 50: Element 'bearer', attribute 'call_sign': The attribute 'call_sign' is not allowed.
  line 51: Element 'bearer', attribute 'call_sign': The attribute 'call_sign' is not allowed.
  line 52: Element 'bearer', attribute 'call_sign': The attribute 'call_sign' is not allowed.
  line 53: Element 'bearer', attribute 'call_sign': The attribute 'call_sign' is not allowed.
  line 54: Element 'bearer', attribute 'call_sign': The attribute 'call_sign' is not allowed.
  line 55: Element 'bearer', attribute 'call_sign': The attribute 'call_sign' is not allowed.

  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: 1 service in the file
• ✓
  pass: Station found: KSPK-FM

  Matched on bearer fm:4a0.4118.10230
• ✓
  pass: Short name: KSPK-FM
• ✓
  pass: Medium name: KSPK-FM
• i
  info: No long name

  Optional.
• ✓
  pass: Short description present

  Southern Colorado's Best Country
• i
  info: No long description

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

  Optional.
• ✓
  pass: 1 link

  KSPK Website https://www.kspk.com/
• ✓
  pass: The <radiodns> element matches the registration

  fqdn radiodns.kspk.com, service identifier kspkfm

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.
• !
  warn: 5 logos downloaded and checked

Preview	Declared	Actual	Size	Result
	32x32	32x32	18,715 B	OK https://www.kspk.com/radiodns/img/Logo1.jpg
–	112x32	112x32	570,127 B	570 kB (under 50 kB recommended) https://www.kspk.com/radiodns/img/Logo2.jpg
–	128x128	128x128	584,245 B	584 kB (under 50 kB recommended) https://www.kspk.com/radiodns/img/Logo3.jpg
–	320x240	320x240	626,192 B	626 kB (under 50 kB recommended) https://www.kspk.com/radiodns/img/Logo4.jpg
–	600x600	600x600	685,894 B	686 kB (under 50 kB recommended) https://www.kspk.com/radiodns/img/Logo5.jpg

6. Transmitters and streams

• i
  info: Other bearer: fm:da0.d49a.10030

  Not checked by this tool.
• ✓
  pass: FM bearer fm:4a0.4118.10230

  cost 0
• i
  info: Other bearer: fm:3a0.3fac.10030

  Not checked by this tool.
• i
  info: Other bearer: fm:da0.d5ce.10410

  Not checked by this tool.
• i
  info: Other bearer: fm:da0.d468.10410

  Not checked by this tool.
• i
  info: Other bearer: fm:da0.d3f9.10170

  Not checked by this tool.
• i
  info: Other bearer: fm:da0.d197.10410

  Not checked by this tool.
• ✕
  fail: Stream not reachable: http://stream.kspk.com:8000/live.mp3

  Port 8000 is not one this checker will connect to (allowed: 80, 443, 8080, 8443)

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