AR-DV1 Quirky "Missteps" While Tuning Or Searching

[MStep]

This may have been mentioned before. Let's say I want to search 476.3125 through 477.1375 in 25 KHz increments. The DV1 does not appear to like that approach, so it jumps to the first "rounded out" frequency of 476.350 then onto 476.400, 476.425....... - you get the idea. Rather than doing the 476.3125, then 476.3175, 476.4125....etc. I think you get the picture. The DV1 does not like (what was called in the past) those "split frequencies" and the radio does what it wants to do. Try it on your own DV1.

If I am not being clear, try it on your own DV1 to see if it exhibits the same behavior. Now of course, the obvious solution is just to tune or search in 12.5 increments, but that defeats the efficiency of the radio in skipping over those extraneous channels and any adjacent spill-over from them.

This appears to even happen in programmed searches, and yet, somewhere in the back of my mind, I recall finding a method to defeat the radios desire to do its own tuning. If someone can recollect for me what I may have at some point in the past already reported and/or solved, or if someone if familiar with a method to use, I would certainly appreciate the quick tip. And if I re-stumble upon the secret of the steps, I will certainly report back.

Hopefully, AOR reads these posts occasionally, and so in a somewhat related re-request, many of us are still waiting for a 3.125 MHz increment to be introduced.

Thanks all in advance.

PS. I see I did broach the subject back in 2016 In a thread called Quirks And Comments. I will have to reread that. A medical condition that occurred in 2017 cause a partial loss of memory, so I will go back and explore those comments. Thanks again.

 

[AOR-262]

@MStep

Remember - the step rate must be divisible to the frequency; thus if your displayed frequency is 121.500 MHz and your step rate is 25kHz, the next displayed frequency is going to be 121.525 MHz. If your displayed frequency is 121.515 MHz, the next frequency displayed (at a step rate of 25kHz) is going to be 121.525 MHz unless you set a +/- offset frequency which again must be divisible to the entered frequency. You can achieve this on the 8600 Mk2 by pressing the 'FUNC' button then press '2' (STEP) then press the 'PASS' button. You will see on the screen at the bottom 'ADJ+" where you can enter the offset amount. I'm sure you can do this on the DV-1?

 

[MStep]

@MStep

Remember - the step rate must be divisible to the frequency; thus if your displayed frequency is 121.500 MHz and your step rate is 25kHz, the next displayed frequency is going to be 121.525 MHz. If your displayed frequency is 121.515 MHz, the next frequency displayed (at a step rate of 25kHz) is going to be 121.525 MHz unless you set a +/- offset frequency which again must be divisible to the entered frequency. You can achieve this on the 8600 Mk2 by pressing the 'FUNC' button then press '2' (STEP) then press the 'PASS' button. You will see on the screen at the bottom 'ADJ+" where you can enter the offset amount. I'm sure you can do this on the DV-1?

Thanks. Will check out that offset option. I seem to recall somehow doing it in the past, but for now it eludes me, Thank you so much.

 

[MStep]

@MStep

Remember - the step rate must be divisible to the frequency; thus if your displayed frequency is 121.500 MHz and your step rate is 25kHz, the next displayed frequency is going to be 121.525 MHz. If your displayed frequency is 121.515 MHz, the next frequency displayed (at a step rate of 25kHz) is going to be 121.525 MHz unless you set a +/- offset frequency which again must be divisible to the entered frequency. You can achieve this on the 8600 Mk2 by pressing the 'FUNC' button then press '2' (STEP) then press the 'PASS' button. You will see on the screen at the bottom 'ADJ+" where you can enter the offset amount. I'm sure you can do this on the DV-1?

Yes. that was the correct sequence, and as soon as I went through the steps, I remembered having learned this years ago. Not sure if it is poorly documented, or perhaps not documented correctly in the DV1 manual at all. The DV1 continues to amaze me. What else may be hiding in other key presses I wonder ?!?

Thanks again for the quick and effective response.

P.S. I think I'll download the 8600 Mk2 manual as well and give it a look.

 

[MStep]

Slightly off topic but DV1 related--- I happened to notice that when the radio if turned off (which is a rare occurrence at this shack), if you take a bright light and peek at the display window, you will see the clock is still running in the upper right-hard corner of the display.

 

[morfis]

Slightly off topic but DV1 related--- I happened to notice that when the radio if turned off (which is a rare occurrence at this shack), if you take a bright light and peek at the display window, you will see the clock is still running in the upper right-hard corner of the display.

The whole display remains powered - you can see the line of dead pixels* clearly on miine until the power cord is yanked

*£8 to send it back to the dealer, £75 for them to send it back to Japan. Repair cost and return postage cost unknown until it's been to AOR.

 

[MStep]

The whole display remains powered - you can see the line of dead pixels* clearly on miine until the power cord is yanked

*£8 to send it back to the dealer, £75 for them to send it back to Japan. Repair cost and return postage cost unknown until it's been to AOR.

Interesting. On my particular unit, I don't see any thing resembling any other pixels--- just that very small clock running in the upper right hand corner. Since the unit is powered down, the display lighting is off at the time. My radio is hardly ever off, but I will continue to check for that condition you mentioned when I power down.

Certainly not cost effective to send it back if this is only occurring when the radio is powered down. As long at the unit is performing properly when powered up. The usual questions would be--- has this been happening since you acquired the unit? Did it occur after a firmware upgrade? Anything else that might has caused it to happen?

This DV1's can be quirky and temperamental little suckers--- I am running FW 1907B and will occasionally loose sound or signal switching between modes--- something the latest firmware is supposed to address, I think. Though I am reluctant to update.

Another quick on mine if that at times it does not like to be turned off--- a 2 second press of the volume button, which is used to turn the radio on and off, sometimes does not immediately comply with my request to turn off--- sometimes it will take 10 seconds or so to recognize the command; other times the command is completely ignored.

Quirks or not, I love the DV1.

 

[morfis]

No power - clear screen as you'd expect
Power applied - faint grey to all pixels with clock slightly darker, though not obvious without extra oblique lightsource. (dead row obvious)
Unit on - display as you'd expect (dead row more obvious)

Can't say when the row of dead pexels appeared as they are roughly between the two VFOs and I never thought about it until putting a second unit next to it. Second unit doesn't exhibit the missing line so it stood out. Can't say if it was after a firmware upgrade or not - though I've never observed any significant problems with any firmware upgrade (though see below).

The delayed 'off' has existed on mine since new, every firmware version. It has always happened on first use after a firmware upgrade but other than that I can't reproduce the actions that lead to it.....99% of the time it powers down correctly. The delay when it happens can be anywhere up to minutes (ie. I give up waiting and only notice later that it did actually turn off eventually).

The things I most dislike about the radio is it's shcokingly bad audio...but that's easily resolved with an external speaker and the horrendous audio spike on start-up.
On the whole I think the display is poor for a modern receiver but it's easy enough to live with

 

[MStep]

No power - clear screen as you'd expect
Power applied - faint grey to all pixels with clock slightly darker, though not obvious without extra oblique lightsource. (dead row obvious)
Unit on - display as you'd expect (dead row more obvious)

Can't say when the row of dead pexels appeared as they are roughly between the two VFOs and I never thought about it until putting a second unit next to it. Second unit doesn't exhibit the missing line so it stood out. Can't say if it was after a firmware upgrade or not - though I've never observed any significant problems with any firmware upgrade (though see below).

The delayed 'off' has existed on mine since new, every firmware version. It has always happened on first use after a firmware upgrade but other than that I can't reproduce the actions that lead to it.....99% of the time it powers down correctly. The delay when it happens can be anywhere up to minutes (ie. I give up waiting and only notice later that it did actually turn off eventually).

The things I most dislike about the radio is it's shcokingly bad audio...but that's easily resolved with an external speaker and the horrendous audio spike on start-up.
On the whole I think the display is poor for a modern receiver but it's easy enough to live with

When listening to certain signals, my friend has compared the raspy and sometimes tinny sound of the built-in DV1 speaker to the of a dentist's drill, and it affects her the same way. She says she can "hear" it in her teeth. I occasionally use it with an external speaker, but I sometimes move the DV1 around quite a bit, so I often run it without the external.

Thanks for sharing your other experiences with the DV1 as well.

 

[SigIntel8600]

No power - clear screen as you'd expect
Power applied - faint grey to all pixels with clock slightly darker, though not obvious without extra oblique lightsource. (dead row obvious)
Unit on - display as you'd expect (dead row more obvious)

Can't say when the row of dead pexels appeared as they are roughly between the two VFOs and I never thought about it until putting a second unit next to it. Second unit doesn't exhibit the missing line so it stood out. Can't say if it was after a firmware upgrade or not - though I've never observed any significant problems with any firmware upgrade (though see below).

The delayed 'off' has existed on mine since new, every firmware version. It has always happened on first use after a firmware upgrade but other than that I can't reproduce the actions that lead to it.....99% of the time it powers down correctly. The delay when it happens can be anywhere up to minutes (ie. I give up waiting and only notice later that it did actually turn off eventually).

The things I most dislike about the radio is it's shcokingly bad audio...but that's easily resolved with an external speaker and the horrendous audio spike on start-up.
On the whole I think the display is poor for a modern receiver but it's easy enough to live with

My DV-1 had the same issue while under warranty.

DV-1 Display Failure

 

[marlbrook]

The delayed 'off' has existed on mine since new, every firmware version

The AR-DV1 seems to read the SD Card on power down, and at other times.

The way it reads the Card is very 'unforgiving'. Unlike a P.C. that ignores any small fault, the DV1 does not.

Always worth removing the SD Card if any sort of unusual activity keeps happening, and see if the problem goes away, including a long time to start up / shut down.

Often reformatting the Card does the trick, after first saving the contents to be copied back later. Unless of course the Card is failing with age, which they do. In that case the problems will return very quickly indicating a replacement Card is needed.

Even if the Card has no errors, if there are a lot of files on it, usually saved audio (.wav) ones that will slow down the time it takes to power down.

However the DV1 does also save other data as it closes, so it will never be instant.

 

[morfis]

My DV-1 had the same issue while under warranty.

Exact same line methinks. Thanks for info