Is your station ready for hybrid radio?

What is being checked

• i
  info: RadioDNS lookup name

  08850.4470.4a0.fm.radiodns.org (frequency 88.50 MHz, PI 4470, country code 4a0)

1. RadioDNS registration

• ✓
  pass: Registered

  08850.4470.4a0.fm.radiodns.org points to the station's authoritative domain: ktwi.org

2. Service discovery (SRV records)

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

  priority 10, weight 0, port 80 -> ktwi.org
• !
  warn: Only the older _radioepg record is published

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

  218 ms, 3,366 bytes
• !
  warn: The SI file is served through a redirect

  http://ktwi.org/radiodns/spi/3.1/SI.xml -> https://ktwi.org/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 6: Element 'mediumName': [facet 'maxLength'] The value has a length of '25'; this exceeds the allowed maximum length of '16'.
  line 36: 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: 1 service in the file
• ✓
  pass: Station found: His Mission

  Matched on bearer fm:4a0.4470.08850
• ✓
  pass: Short name: KTWI
• ✓
  pass: Medium name: His Mission
• i
  info: No long name

  Optional.
• ✓
  pass: Short description present

  His Mission Radio 88.5 FM delivers uplifting Christian music, faith-based programs, and positive community encouragement to inspire and strengthen your walk with Christ.
• 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.
• !
  warn: No <radiodns> element

  What to do: Add <radiodns fqdn="ktwi.org" serviceIdentifier="..."/> so receivers can find your other RadioDNS services.

5. Logos

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

Preview	Declared	Actual	Size	Result
	32x32	32x32	992 B	OK https://ktwi.org/wp-content/uploads/2025/12/HISMISSINGCIRCLE32X32.jpg
	112x32	112x32	1,661 B	OK https://ktwi.org/wp-content/uploads/2025/12/KTWI112X32.jpg
	128x128	128x128	4,882 B	OK https://ktwi.org/wp-content/uploads/2025/12/HISMISSINGCIRCLE128X128.jpg
	320x240	320x240	12,582 B	OK https://ktwi.org/wp-content/uploads/2025/12/HISMISSINGCIRCLE320X240.jpg
	600x600	600x600	26,393 B	OK https://ktwi.org/wp-content/uploads/2025/12/HISMISSINGCIRCLE600X600.jpg

6. Transmitters and streams

• ✓
  pass: FM bearer fm:4a0.4470.08850

  cost 0
• !
  warn: Stream OK: https://listen.ktwi.org/stream/8046

  audio/mpeg, 192 kbps
  The bearer has no mimeValue; receivers use it to decide whether they can play the stream (this one answers audio/mpeg).
  The file says 128 kbps but the stream reports 192 kbps.
  No offset set (optional): if the stream runs behind the broadcast, an offset in milliseconds lets receivers line the two up.