Is your station ready for hybrid radio?

What is being checked

• i
  info: WPVM-LP - ASHEVILLE, NC

  From the NRSC list: 103.70 MHz, PI code 7E72, FCC facility 133357.
• i
  info: RadioDNS lookup name

  10370.7e72.7a0.fm.radiodns.org (frequency 103.70 MHz, PI 7E72, country code 7a0)

1. RadioDNS registration

• ✓
  pass: Registered

  10370.7e72.7a0.fm.radiodns.org points to the station's authoritative domain: rdns.mylpfm.com

2. Service discovery (SRV records)

• i
  info: _radiospi._tcp.rdns.mylpfm.com: not published
• ✓
  pass: _radioepg._tcp.rdns.mylpfm.com published

  priority 10, weight 100, port 80 -> rdns.mylpfm.com
• !
  warn: Only the older _radioepg record is published

  What to do: Add _radiospi._tcp.rdns.mylpfm.com 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://rdns.mylpfm.com/radiodns/spi/3.1/SI.xml answered

  101 ms, 49,624 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.
• !
  warn: The file does not strictly follow the official SI schema (3.1)

  line 23: Element 'mediaDescription': This element is not expected. Expected is one of ( keywords, link, bearer, radiodns, geolocation, serviceGroupMember, ##other* ).
  line 58: Element 'mediaDescription': This element is not expected. Expected is one of ( keywords, link, bearer, radiodns, geolocation, serviceGroupMember, ##other* ).
  line 91: Element 'mediaDescription': This element is not expected. Expected is one of ( keywords, link, bearer, radiodns, geolocation, serviceGroupMember, ##other* ).
  line 127: Element 'mediaDescription': This element is not expected. Expected is one of ( keywords, link, bearer, radiodns, geolocation, serviceGroupMember, ##other* ).
  line 169: Element 'mediaDescription': This element is not expected. Expected is one of ( keywords, link, bearer, radiodns, geolocation, serviceGroupMember, ##other* ).
  line 205: Element 'mediaDescription': This element is not expected. Expected is one of ( keywords, link, bearer, radiodns, geolocation, serviceGroupMember, ##other* ).
  line 239: Element 'mediaDescription': This element is not expected. Expected is one of ( keywords, link, bearer, radiodns, geolocation, serviceGroupMember, ##other* ).
  line 274: Element 'mediaDescription': This element is not expected. Expected is one of ( keywords, link, bearer, radiodns, geolocation, serviceGroupMember, ##other* ).
  line 314: Element 'mediaDescription': This element is not expected. Expected is one of ( keywords, link, bearer, radiodns, geolocation, serviceGroupMember, ##other* ).
  line 347: Element 'mediaDescription': This element is not expected. Expected is one of ( keywords, link, bearer, radiodns, geolocation, serviceGroupMember, ##other* ).
  line 385: Element 'mediaDescription': This element is not expected. Expected is one of ( keywords, link, bearer, radiodns, geolocation, serviceGroupMember, ##other* ).
  line 421: Element 'mediaDescription': This element is not expected. Expected is one of ( keywords, link, bearer, radiodns, geolocation, serviceGroupMember, ##other* ).
  (12 more not shown)

  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: 24 services in the file
• ✓
  pass: Station found: WPVM-LP 103.7

  Matched on bearer fm:7a0.7e72.10370
• ✓
  pass: Short name: WPVM
• ✓
  pass: Medium name: WPVM-LP 103.7
• ✓
  pass: Long name: WPVM 103.7 Broadcasting the Arts and Culture of Asheville to the World
• ✓
  pass: Short description present

  We are the 'Voice of Asheville'
• ✓
  pass: Long description present

  WPVM fm is Asheville's arts and culture radio. Listener supported non-commercial radio for the Asheville community. Listen to remember, listen to forget.
• ✓
  pass: Keywords present

  wpvm, AshevilleFM radio, Avl music scene, elections, voter, community
• ✓
  pass: 2 links

  Station Website https://wpvmfm.org/
  Our Twitter Page https://twitter.com/WPVM_Asheville
• ✓
  pass: The <radiodns> element matches the registration

  fqdn rdns.mylpfm.com, service identifier 133357-1

5. Logos

• !
  warn: Not all five standard logo sizes are listed

  Missing: 32x32, 112x32

  What to do: RadioDNS asks for either no logos or at least the five standard sizes, so every receiver finds one that fits.
• !
  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	2,838 B	OK https://rdns.mylpfm.com/images/133/133357-1-32-32.png
	?	112x32	4,045 B	OK https://rdns.mylpfm.com/images/133/133357-1-112-32.png
	128x128	128x128	23,240 B	OK https://rdns.mylpfm.com/images/133/133357-1-128-128.png
	320x240	320x240	47,227 B	OK https://rdns.mylpfm.com/images/133/133357-1-320-240.png
	600x600	600x600	93,347 B	93 kB (under 50 kB recommended) https://rdns.mylpfm.com/images/133/133357-1-600-600.jpg

6. Transmitters and streams

• ✓
  pass: FM bearer fm:7a0.7e72.10370

  cost 2, offset 0 ms
• ✕
  fail: Stream not reachable: https://stream.wpvmfm.org:8100/wpvm-128k.mp3

  Port 8100 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.