People have gotten out of control with the spectral purity aspect since the cheap analyzers have become popular. Now everyone is a harmonics expert, testing cheap radios with cheap analyzers and being unnecessarily critical. Take those tests with a grain of salt because they're not all that accurate and the results don't necessarily mean anything. Just because a radio tests out of FCC spec doesn't mean it will cause interference, and just because something is within spec doesn't necessarily mean it won't cause interference. I haven't seen this particular radio test out of spec on 700-800 mhz. I have seen it test slightly high around 500. The thing with these low power HT radios is that in order to cause interference on a harmonic frequency you have to be way out of spec and very close to whoever you're interfering with. The danger of unintentionally interfering with a public safety frequency in the 800s is virtually impossible considering the odds of having someone using the exact harmonic frequency, not using any tones or happening to be using the exact same tone you're using, and them being close enough for what would be a tiny amount of power to interfere with them. Now, if you tune around 49-50 ish mhz, you'll hear the NOAA broadcasts from up in the 160s and I also pick up a couple of local VHF HAM repeaters down there perfectly clear but nobody seems to care about that. Those guys are pushing way more power and their transmissions could easily cause interference to someone using those frequencies, but the FCC hasn't fined NOAA. Essentially, unintentional interference is something to consider, but it's not nearly as big of an issue as people make it out to be. Cheap led lights, motion detectors, and camera systems cause more interference than HT radios do.
The lag between when you actually push the PTT and when your voice is actually recieved on another dmr radio is called "delay".. Because DMR is turning your voice into digital language which is different then analog FM, DMR radios take a bit of a delay to "connect" with each other. This happens with just about any DMR radio, but desense can definitely effect the delay time depending on the radio your using. You can fairly easily mitigate this problem by ensuring that all parties to a DMR talkgroup/channel wait a couple seconds or so once the PTT is pushed before talking into the mic, that way the delay shouldn't affect the actual voice transmission.
@@wg99er that lag is not the typical "delay" that you're talking about. Listen closer to the video. The Ailunce actually loses the first bit of the transmission. This same thing does not happen on my hyteras. A lot of assumptions get made around DMR and it having performance issues from people whose only experience with DMR comes from use of cheap Chinese radios that are not built to perform at the same level as a quality radio. That lag is not normal, it's a big issue with the radio
@@jameslee522 interesting thought, but keep in mind the battery is not feeding the radio with 12v, the battery outputs somewhere around 7.5 volts, most likely. Hooking up the radio directly to 12v would likely fry the radio. You're better off charging the battery off of the built in USB-C
Hopefully they can update the firmware to fix that delay. Allegedly they are going to release an updated version with hardware that fixes the spurious emissions issue. The non-GPS version is on sale for $130 on Amazon hard to beat that price
yes the same with mi hd2
People have gotten out of control with the spectral purity aspect since the cheap analyzers have become popular. Now everyone is a harmonics expert, testing cheap radios with cheap analyzers and being unnecessarily critical. Take those tests with a grain of salt because they're not all that accurate and the results don't necessarily mean anything. Just because a radio tests out of FCC spec doesn't mean it will cause interference, and just because something is within spec doesn't necessarily mean it won't cause interference. I haven't seen this particular radio test out of spec on 700-800 mhz. I have seen it test slightly high around 500. The thing with these low power HT radios is that in order to cause interference on a harmonic frequency you have to be way out of spec and very close to whoever you're interfering with. The danger of unintentionally interfering with a public safety frequency in the 800s is virtually impossible considering the odds of having someone using the exact harmonic frequency, not using any tones or happening to be using the exact same tone you're using, and them being close enough for what would be a tiny amount of power to interfere with them. Now, if you tune around 49-50 ish mhz, you'll hear the NOAA broadcasts from up in the 160s and I also pick up a couple of local VHF HAM repeaters down there perfectly clear but nobody seems to care about that. Those guys are pushing way more power and their transmissions could easily cause interference to someone using those frequencies, but the FCC hasn't fined NOAA. Essentially, unintentional interference is something to consider, but it's not nearly as big of an issue as people make it out to be. Cheap led lights, motion detectors, and camera systems cause more interference than HT radios do.
That is a real FCC ID. Application was approved on 5/21/2024 to Shenzen Ysair Technology Co.
The lag between when you actually push the PTT and when your voice is actually recieved on another dmr radio is called "delay".. Because DMR is turning your voice into digital language which is different then analog FM, DMR radios take a bit of a delay to "connect" with each other. This happens with just about any DMR radio, but desense can definitely effect the delay time depending on the radio your using. You can fairly easily mitigate this problem by ensuring that all parties to a DMR talkgroup/channel wait a couple seconds or so once the PTT is pushed before talking into the mic, that way the delay shouldn't affect the actual voice transmission.
@@wg99er that lag is not the typical "delay" that you're talking about. Listen closer to the video. The Ailunce actually loses the first bit of the transmission. This same thing does not happen on my hyteras. A lot of assumptions get made around DMR and it having performance issues from people whose only experience with DMR comes from use of cheap Chinese radios that are not built to perform at the same level as a quality radio. That lag is not normal, it's a big issue with the radio
You see contacts held on by screws. I see screw contacts, that could be used to wire up to an external power supply.
@@jameslee522 interesting thought, but keep in mind the battery is not feeding the radio with 12v, the battery outputs somewhere around 7.5 volts, most likely. Hooking up the radio directly to 12v would likely fry the radio. You're better off charging the battery off of the built in USB-C
Hopefully they can update the firmware to fix that delay.
Allegedly they are going to release an updated version with hardware that fixes the spurious emissions issue.
The non-GPS version is on sale for $130 on Amazon hard to beat that price
Great video
Go to power saving mode set it to off.
It’s in main settings under the name SAVE
See if that makes a difference with the delay
the same
I don hav dolla
I don hav fo ehm wod meal
But i likly interstin fo convesatio label
Rily nic range, lot gos by