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Auvio HD tuner review

Hi

I bought this tuner, mainly as a collectible as its being discontinued. Here is my review of it.

It comes in a fancy box (best I've ever seen from any HiFi gear) & looks aesthetic. It features a nice large, easy to read display, a full featured remote control. Its a funny tuner with some really weird quirks. eg - if it mutes, it produces a 'whining' sound - like the tuner is searching for a signal to lock onto (see AM below).
It features direct frequency entry via the remote. But it fills in the zero automatically - eg entering 104.9, it will put in the "0" itself, so you only type 1_49. - a funny quirk.
Rotary manual tuning also advances 200khz/10khz steps

For FM, its rather sensitive, hearing weak signals like 107.5 from Batemans Bay - 90km away - 2EAR-FM low powered community radio - just audible above floor noise, even on the Sony XDR-F1HD. Its selectivity is good but nowhere near as good as the XDR. It tunes in 200khz steps, which makes it useless for anything on even freqs - eg 91.8. Fortunately, most Australian FM channels are odd freqs like the U.S. It suffers birdies on 90.3 (blocks this channel for DX) & 101.7 (Birdie seems to 'tune out' after about 10secs allowing DX on 101.7).
It has aggressive blending (like the Pioneer Supertuners) & will only decode stereo on strong signals.
It has no stereo indicator or a signal strength meter (contradicting the pictures you see of the Auvio on the box which does show a signal meter).
This tuner overloads very easily, even in my remote rural location (so if you live in an urban area, the tuner would probably have harmonics all over the dial).

The AM - in one word forget it, unless I have a defective unit for AM. It appears to mute rather aggressively & only has about 1khz tolerance for searching any signals. It picked up signals which match the USA's 10khz channels like 1170 & 1530 but took at least 10secs for it to lock onto channels like 1611, 1521 (1 khz off a 10khz channel). But anything else - SOL - not even on very strong signals (eg 918khz local AM station, tuned to 920).
Only strong signals can break through its muting, otherwise, it just produces that 'whine' as it tries to lock onto the nearby signal. I'd doubt you'd receive anything on AM with the supplied loop.

Its a nice tuner for casual DXing but not for serious DX. The Sony XDR-F1HD beats it hands down. I will test the Auvio on my 200m longwire during winter to see if it can pick up KMIK 1580 & detect "HD" like the Sony can.

dxer2_2000
 
Thanks for the review -- like many HD tuners, it sounds like the Auvio is "not for everyone".

This summary of problems reminds me of an ad for a typical prescription drug with the long list of warnings, as required in the US. "May cause nausea, headaches, ulcers, internal bleeding, drowsiness, and eventual death."

I'm not sure if in Australian pharma advertisers are required to include the same warnings, but if you want to experience what we're subjected to on a daily basis, check this site:

http://www.soundboard.com/sb/Drug_warnings_audio.aspx
 
The Radio Shack Auvio tuner appears to identical to the Best Buy Insignia tuner, except for the labelling. It's basically a big, empty metal box with a small, unshielded microprocessor board sitting inside. The AM loop antenna is connected via a speaker terminal jack -- not a good sign! Analog FM sounds very dull and usually lacks any stereo separation, probably to purposely make the "HD" audio sound better in comparison.

The AM tuner is very insensitive, and even strong analog signals are plagued with lots of hiss and background noise, probably due to poor internal shielding of the tuner's front end. Even the strongest 50 kW signals on the dial have trouble achieving a solid lock on HD decoding. The slightest bit of interference causes it to drop back to analog AM -- even the pop and click from someone flipping a light switch!
 
Also - the RDS seems very confused. When I'm picking up Mix 106.3 Canberra ACT, it shows "KCRZ Classical" on the display! - thinks its picking up an American FM station!!!

Also, if you use the direct frequency entry via the remote, it will automatically write that freq to the current preset, overwriting whatever was previously entered (eg, if you had it set to preset 8 & then used direct entry, it will overwrite preset no8 )

Also I found more birdies. & the sensitivity dropped today, so the overload I had yesterday is gone. So, sensitivity is not as good as the Sony XDR tuner. Not sure why the sensitivity dropped - nothing wrong with my preamp or antenna connection.

dxer2_2000
 
A comparison of the Insignia and Auvio manuals
shows they are basically the same unit.
The Auvio only draws 3 watts compared to the Insignia's 9.
It also has 8 more memories on AM and more
features on the remote.
Dxer2_2000's review is spot on;mine was stone deaf,however
compared to an Insignia portable.There was more hash on
FM than AM which implies (as said) little or no shielding.
A real shame as it ran cool and had a good build quality.
It appears to have been in RS inventory from February to July
of last year when it entered closeout status...it was in
inventory here for 1.5 hours.
 
More confused RDS data from the Auvio (And I know the stations transmit correct data)

104.1 2DAY-FM Sydney - "KJTL Country"
104.9 2MMM Sydney - "WSBG Oldies"
105.7 Triple J Sydney "WJJJ Classical"

My guess is the Auvio comes with some pre-programmed RDS info embedded in the chipset. In this case, for U.S. FM stations.

dxer2_2000
 
dxer2_2000 said:
More confused RDS data from the Auvio (And I know the stations transmit correct data)

104.1 2DAY-FM Sydney - "KJTL Country"
104.9 2MMM Sydney - "WSBG Oldies"
105.7 Triple J Sydney "WJJJ Classical"

My guess is the Auvio comes with some pre-programmed RDS info embedded in the chipset. In this case, for U.S. FM stations.

dxer2_2000

What's even weirder is WJJJ is gospel, WSBG is rock and there is no KJTL that I know of.

The program types (PTY) between US and the rest of the world are different. Check out this link and see if the US version matches up to what your stations actually play:

http://en.wikipedia.org/wiki/Radio_Data_System#Program_types

For example, if Triple M is rock, the PTY for rock in the US will show Oldies instead. Triple J's Classical corresponds to "other music" which I suppose is fitting for the JJJ. :)
 
dxer2_2000 said:
More confused RDS data from the Auvio (And I know the stations transmit correct data)

104.1 2DAY-FM Sydney - "KJTL Country"
104.9 2MMM Sydney - "WSBG Oldies"
105.7 Triple J Sydney "WJJJ Classical"

My guess is the Auvio comes with some pre-programmed RDS info embedded in the chipset. In this case, for U.S. FM stations.

The U.S. version of the RDS standard suggests a mapping of call letters to PI code. This recommendation doesn't have the force of law -- stations owned by Clear Channel (the largest commercial broadcasting company in the U.S.) don't precisely follow the recommendation, apparently it has something to do with a traffic service they're providing -- but many stations do follow it.

There's a calculator on my website at http://www.w9wi.com/articles/rdsreverse.html which will calculate the standard U.S. PI code given a set of call letters.

Is it possible 2DAY is using PI code 29BD; 2MMM with 8450; and Triple J with 6D5F?

Canada didn't come up with a recommended mapping for several years after the U.S. scheme was developed. Often, Canadian stations would replace the "C" in their call letters with a "W" or "K", resulting in a U.S. callsign, and then using that in the formula to determine their PI. Could be that's what Triple J did.

Zach forwarded the info on why the program formats come up incorrectly. For what it's worth, there *is* a KJTL -- but it's a TV station in Texas, not a radio station. The RDS standard mapping handles all possible four-letter callsigns, even those that are not currently issued to any station.
 
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