Leaderboard

Configuring scan groups is a function of the factory software. You have 10 scan groups available. Each group can have a single contiguous range of memories associated with it (e.g Channels 1-20, 20-100, 5-20, etc.). Each group has a group number. From the radio you can pick which group you want to scan. That is what the scan group menu allows you to do, select which of those groups you want to scan. You also have the ‘All’ option, which allows you to scan all channels programmed into the radio. Note that you can designate each channel memory to be scan-able or not scan-able. That setting you can change on the radio. The manual for the KG-1000G is light years above every other Wouxun manual, but it still falls short of the ideal. In fact, the distributor had to write it themselves since the manufacturer is not qualified to write an english manual for one of their products. Hope that helps. Michael WRHS965 KE8PLM

Good find; the user manual has some interesting tidbits in it - namely mention of a mini XLR connector on the radio for remote headsets. Looks like they have it channel locked to the standard 22 + 8 arrangement; I wish the consumer oriented manufacturers would get out of the habit of doing that as there's no limitation on the number of memory channels a GMRS radio can have access to, just the frequencies. If they want to keep it newbie proof keep the first 30 channels locked as is and allow the memory channels above 30 to be whatever. An alphanumeric display with an option for more than 30 total memory channels (like 128 or so, like many commercial Part 95 radios and the increasingly popular Wouxun KG805, KG905, and KG1000) would be really nice to have for those who use repeaters a lot. I get that the FCC recommends the 22+8 arrangement for approval in their technical bulletins, but it's not actually a requirement for approval, so if you happen to be a manufacturer reading this (looking at you Midland, Retevis, B-Tech): STOP IT! There's no actual need. Also sad to report the USB connector on the body is supposedly for charging only; hopefully they have a way to get a programming cable hooked up like the MXT400. As seems to be standard for Midland they have a really attractive physical packaging and decent performing radio, but are being too conservative with the programmable bells and whistles for the price point; these would be so easy to incorporate it's a shame not to IMO.

I purchased my Kenwood USB cables from bluemax49ers on eBay. If you send him a request immediately after purchasing, he’ll email you the link for the free software download and all for approximately $20. You can’t go wrong.

Found some photos looks like a mish-mash of the 400. Is it me or does the body of the radio look like the body of a Yaesu FTM400? Looks like it is going to be a great radio. Available 25khx spacing. Testing showing 49.x Watts (manufacturer cushion to allow for tolerance variations). Looks very spectral clean with almost no spurious emissions. My only gripe "hi and lo" power settings from what I can see in the manual. So you get 5w or 50w, wouldn't a medium of 15-20w power setting been nice? don't like running radios at full power unless I need to. https://fccid.io/MMAXT575/External-Photos/Ext-Photos-5212922 https://fccid.io/MMAMXT575

I have that same wideband programming issue on my Vertex VXR-7000 ... Set the clock on your computer back to 1980 as @wayovertherementioned and it will let you change it.

The 5 MHz spacing is an offset for duplex repeaters.

After thinking about it..... a better way to put it is that there is no point in treating very short lines as T-lines. There is no benefit in treating it that way. In PCB and chassis design it's mainly the delay of the T-line that has any meaning When you design on a PC board, even at 1GHz you measure the S-paramterters on the PCB or at the PCB interface. So all the parasitics related to the packaging and PCB interface are absorbed into the S-Parameters. Matching network components are generally treated as discrete impedances - and this is pretty accurate. Everything is surface mount today and the traces are typically as short as the pads. Once we got past the matching network we would try to keep our microstrip in the ballpark of 50 ohms but in many cases you are only going an inch or two. So if your microstrip is off 15% it's probably still better than your matching network. Even at a GHz PC boards have become too small to economically use stubs and T-lines for on board for matching. You can buy an 0402 1pf cap or 1nH inductor for next to nothing. PC board space is too valuable for stubs or T-lines of meaningful length. The only way to really see this is to plot it out on a Smith chart. When the rotation is so small it just doesn't do anything. Vince

I guess that comment is directed to me since I seem to be the one most vocal about Midland's apparent refusal to be honest about this subject. Below is the FCC Grant (click thumbnail) for the MXT400. It is easily found on the FCC OET Equipment Certification database. The FCC grant is what matters. Regardless of what someone in Midland marketing has said, the MXT400 is certified as a narrow band radio. 10K5F3E is what the grant has as the modulation. That is somewhat worse than 11K3F3E which is what a narrow band is these days. A proper "wide band" radio complying fully with GMRS specs will have an emission designator of 16K0F3E or 20K0F3E. The rule sections 95.1771, 95.1773 and 95.1775 stipulate a 20 KHz BW and +/- 5.0 KHz deviation for the main (not interstitial) channels. If in fact the software distributed by Midland invokes a wide band emission from the MXT400 then it is doing so in conflict with the radios type certification. Something Midland could fix by having the lab Timco test the radio under that configuration, and if it passes, then apply for a permissive change. So far no one has produced any evidence that by setting the 25 KHz or 20 KHz bits in the software actually increases the modulation. If someone does this live on youtube with proper test equipment so no sleight of hand, then I will retract the part of my assertion that the radio does not do wide band. But it will remain un-certified. In the meantime the fact remains that folks buying a 40 or 50 watt Midland radio that delivers only 50% of the deviation permitted by GMRS rules, are getting an inferior product that has weak deviation and poor repeater CTCSS access. They might as well buy a cheaper, used, 25 watt Kenwood TK-840-1 which is certified for part 95, has wide band deviation and sounds better. I urge anyone shopping for a GMRS radio to look up the certification and grant on the FCC OET database for radios being considered. Most cheap Chinese radios also fail to deliver the modulation bandwidth permitted by FCC. Some have barely a 5 KHz BW. The FCC grant shows the power level as well as the emission bandwidth. I have no axe to grind with Midland other than this low deviation issue. I would love to buy their MXT275 micromobile remote radio for my wife's car. But instead she has a Kenwood.

Unsolicited comment: midland sells a heck of a lot of radios so it is likely they have quite a lot of influence over whoever is manufacturing the radios for them. There is at least a chance, that they own or have some kind of stake in such a business and some other radios are offshoots of their efforts or directions. I'm thinking that we, the people on this forum may not totally be in the mainstream when wanting to connect a computer to the GMRS radio in our Jeep or whatever. If I was Midland, having to certify, market and support these types of radios I doubt customer low-level programming is something I would find advantageous. I'd want a fool-proof, reliable radio with compatible accessories. having said that, I want programming access to my MXT400 but to be sure, I have not run into real limitations with it yet. I'm going to guess it is transmitting in the wide band mode on repeaters just because it sounds strong. With my suboptimally mounted Midland 6db whip antenna, yesterday I reached a repeater 40+ miles away. im not bashing commercial radios but I'm not dissatisfied in having purchased a nice clean new radio from Midland directly with super fast service vs me having to dig the Cooties out of some icky old taxi cab radio. sorry for the rant but sometimes a different point of view can be worth considering.