Is your station ready for hybrid radio?

RadioDNS lets connected car radios and receivers show your logo, name and stream. This free checker follows the same steps a receiver does and tells you, in plain English, what works and what to fix.

1 problem found

14 passed · 6 suggestions · 1 problems

What is being checked

info: RadioDNS lookup name
09150.454c.4a0.fm.radiodns.org (frequency 91.50 MHz, PI 454C, country code 4a0)

1. RadioDNS registration

pass: Registered
09150.454c.4a0.fm.radiodns.org points to the station's authoritative domain: radiodns.prss.org

2. Service discovery (SRV records)

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.
info: _radiovis._tcp: not published
Slideshow/visuals (STOMP) - optional, only needed for a live slideshow service.
info: _radiopush._tcp: not published
Slideshow/visuals (Server-Sent Events) - optional, only needed for a live slideshow service.
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
361 ms, 261,695 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

info: 76 services in the file
pass: Station found: KUER 90.1
Matched on bearer fm:4a0.454c.09150
pass: Short name: KUER
pass: Medium name: KUER 90.1
pass: Long name: KUER 90.1, NPR Utah
warn: No short description
What to do: Add a one-sentence description (up to 180 characters).
pass: Long description present
KUER 90.1 public radio provides a commercial-free mix of NPR, BBC and local news to thousands of listeners throughout Utah and beyond through its extensive translator network.

A charter member of National Public Radi...
info: No keywords
Optional.
pass: 1 link
https://www.kuer.org/
pass: The <radiodns> element matches the registration
fqdn radiodns.prss.org, service identifier 0000000000000535

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.
info: Logo checks limited
Only the first logos were fetched.
fail: 1 of 12 logos have problems
See the table below.
What to do: Every logo URL must return a real PNG or JPEG of the declared size.

Preview	Declared	Actual	Size	Result
	32x32	32x32	277 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/logo%20blank_188826322.png
	86x48	86x48	390 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/logo%20blank_188826672.png
	74x41	74x41	397 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/logo%20blank_188826680.png
–	1200x1200	1200x1200	800,169 B	800 kB (under 50 kB recommended) http://radiodns.prss.org/radiodns/spi/3.3/si/img/139235654_KUER%20Primary%201200x1200.jpg
	128x128	128x128	1,764 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/logo%20blank_188826314.png
	600x600	600x600	14,461 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/logo%20blank_188826310.png
–	220x48	?	0 B	HTTP 400 http://radiodns.prss.org/radiodns/spi/3.3/si/img/KUER%2026%20logo%201375%C3%97350%20px_188827308.jpg
	170x170	170x170	2,327 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/logo%20blank_188826318.png
	320x240	320x240	4,096 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/logo%20blank_188826546.png
	1600x1200	1600x1200	44,181 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/logo%20blank_188826548.png
	1920x1080	1920x1080	39,736 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/logo%20blank_188826670.png
	160x90	160x90	1,133 B	OK http://radiodns.prss.org/radiodns/spi/3.3/si/img/logo%20blank_188826674.png

6. Transmitters and streams

info: Other bearer: fm:4a0.4549.09010
Not checked by this tool.
info: Other bearer: hd:292.10e33
Not checked by this tool.
warn: Stream OK: https://kuer.streamguys1.com/high_icy
audio/aacp, 63 kbps
The file says 64 kbps but the stream reports 63 kbps.
No offset set (optional): if the stream runs behind the broadcast, an offset in milliseconds lets receivers line the two up.
info: Other bearer: fm:4a0.4650.08930
Not checked by this tool.
info: Other bearer: hd:292.2a4a7
Not checked by this tool.
info: Other bearer: fm:4a0.459a.08810
Not checked by this tool.
info: Other bearer: hd:292.2a380
Not checked by this tool.
info: Other bearer: fm:4a0.4684.09390
Not checked by this tool.
info: Other bearer: hd:292.298c5
Not checked by this tool.
pass: FM bearer fm:4a0.454c.09150
cost 20
info: Other bearer: fm:4a0.473a.08830
Not checked by this tool.
info: Other bearer: fm:4a0.4549.09090
Not checked by this tool.

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Checked 2026-10-20T19:53:00+00:00 (UTC) from the lookup name 09150.454c.4a0.fm.radiodns.org.

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