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SUPERG900

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Everything posted by SUPERG900

  1. The new TGIF DMR network is fully operational. You now need to create a password for any hotspots or repeaters you manage - no more "default" password allowed. The site is accessed at http://tgif.network. The old beta address of http://prime.tgif.network points to the same destination.
  2. Hmm... my NanoVNA died after about two weeks of use. The build quality on my particular example left something to be desired. I've replaced it with a Mini1300, which is larger and somewhat easier to use. It'll work as a simple SWR meter, swept SWR, VNA, and will display resistive and reactive components. Very nice. Since the micro flash card it came with was dead, I had to buy a replacement card, and then perform a HW cal, which required opening the unit up and soldering a jumper. Other than that, it's worked fine. More expensive than a NanoVNA, cheaper than a rigexpert.
  3. I agree. If you're under 2:1 - you're in the right neighborhood. If you can get it down to 1.5:1 without much work - you're good. You can go lower than 1.5:1 with VSWR, but it's only worth the effort if it's really no effort at all as it's not worth investing a lot of time into.
  4. Folks, There's a new talkgroup on the TGIF DMR (digital mobile radio) network that represents the Tucson GMRS Association for dual GMRS/Ham licensees - it's on talkgroup 527. Anyone with a amateur license is welcome to tune in and pipe up - you're welcome! If you're itching to get into digital mobile radio - we can help. This talkgroup is only being carried on the prime.tgif.network (beta) and not the older (soon to be disabled) tgif.network. You need a DMR id of course, and you'll need to sign up at https://prime.tgif.network. TGIF is a newer DMR network, smaller, and runs very clean - no packet loss or congestion like the bigger DMR networks. We're quite impressed. There are instructions at https://prime.tgif.network on how to sign up for TGIF and how to configure a pi-star hotspot for DMR on the prime.tgif.network. If you need help, or have questions on how to setup a pi-star hotspot for the Prime TGIF network, you can catch me on this thread or you can email: SuperG@arrl.net
  5. Can't really do all that much about stupid people transmitting on LMR frequencies, although doing so on a public safety channel *will* get the attention of the authorities. If they keep it up, the FCC can get real ugly with them (a ginormous "you'll be paying it till your dead" fine), and let alone the criminal charges for interfering with law enforcement/public safety, etc.
  6. They do have a right to inspect your station - but the "castle" doctrine of law means that they need your permission to enter your premises. Now a court order - well that's an imperative legal directive no matter what agency applies for it. What ever the court order says you let happen, lest you run afoul of the courts.
  7. Nice radio - probably not made in Japan though.... looks like you gotta pay through the nose to enable the different features. MPL_LMR.pdf (secomwireless.com)
  8. They don't. They can only ask, and you can tell them to get bent. Of course, they'd probably summarily terminate any licenses you have for non-cooperation in an FCC investigation, maybe fine you as well. Plus, if they thought criminal activity was involved they could refer the matter to law enforcement. Best to let them in - they are probably only looking to identify interference issues. (If it's *intentional* interference - well that's on you and you deserve whatever comes your way.)
  9. The sorry fact is, this kind of market protectionism comes back to BITE, and hard! All this *bogus* "national security" posturing just means that other nations will pull the same stunt on us. You and I, consumers, will end up the ones paying for it.
  10. Nearly all of these Chinese HT radio's are FCC part 90 certified. Think about it. Very few of CCR's are certified are part 97 (amateur) certified, and even fewer still are part 95E certified (GMRS). These radios are ok to be sold for licensed part 90 use, and by-the-way, part 90 radios can also be used by amateur licensed folks. Because they inexpensive and easy to get, some folks operate them outside their certifications and/or authorizations. That's on them. You can readily buy a Wouxun or Retevis radio which is indeed certified for GMRS operation.
  11. Normally, I would think that A Baofeng "Kenwood- type" smart cable, would work. It's possible the driver for that cable your PC isn't quite behaving in a manner acceptable to the RT76P. It wouldn't hurt to pick up a Retevis cable.
  12. Not really. There's so many variables with a mobile antenna. Anything under 2:1 is not all bad and the benefits of tweaking it lower aren't all that much greater. Some of us though, are perfectionists, and that's fine too.
  13. It could be a regional/cultural differences thing... Out here in the southwest - we're *super* friendly (everybody's a friend when you're in the desert...) , and we make it a point to personally welcome folks to GMRS and let them know that it's ok - we all have "mic fright" at first, and it'll wear off soon enough, and people will get to know your callsign in time. It's how we roll in these parts. Callsigns are basically treated as calling cards - you can announce your callsign followed by "monitoring" - if your friends are out there, they'll respond.
  14. That's the idea! Making unlicensed folks w/o a callsign people think twice before transmitting on a repeater channel is what we want. Keeps the riffraff out.
  15. If there's an issue - it's nearly always something to do with the cable.
  16. A determined harasser/jammer can easily find out that you're on separate frequencies - and yet still - they need only transmit on just one of them to break your stride. There just aren't that many GMRS frequencies. Now, if it's simply a matter of avoiding hearing somebody else's objectional and uninvited comments - PL tones, or even better, DCS codes work quite well. Remember - nothing can stop someone from transmitting on (any) channel - but you can filter them out - easily. It's exponentially way more work for them to flip through codes and tones than it is channels. Filtering is the purpose of PL and DCS - it only opens squelch when it sees a signal with the code you have programmed in. Really, hearing an unintended party is only an issue if you have no PL or DCS set for a channel. (...and this is why repeaters use PL tones....) Now it may be that you initiate a call on a channel for which you have no squelch code programmed (and third parties can talk on and you hear them too) - but you can easily switch to another channel for which you do have programmed on both radios same squelch code - obviating the need for a split operation.
  17. Yep - scanning on DMR is pointless - just enable promiscuous mode. The only case where scanning DMR might make sense is if you are scanning different repeaters/hotspots, and even then, with promiscuous mode on, you only need that repeater/hotspot listed once in a list. I'm happy as can be with my Anytone's. I see that some folks have quibbles with this feature or that feature - my guess is that you'll have pretty much the same amount of idiosyncrasies in a radio even if you buy from Yaesu or Kenwood, plus you''ll pay more, too. The amateur market just isn't as big as the commercial market - and those established vendors will respond to quibbles with just about that much alacrity too.
  18. Non-standard splits-> This is one of those things where, although technically possible, isn't really all that useful. It's really (half?) a solution in search of a problem.... If privacy is an issue, a commercial license and some digital radios will do the trick. There's no privacy allowed on GMRS, nor Amateur bands, either.
  19. I think know where you're getting it wrong - and this has to do with all the "lists" of data in a DMR configuration. A scan list is just that: a list of channels to scan through - and those channels can be mixture of analog and digital. You can make up as many custom scan lists as you want - you select a scan list, turn on scanning, and your your off and running. The anytone lets you assign a channel to a scan list in the create channel dialog, but the better place to do it is in the scan list dialog. Channel scanning is an optional radio feature though - not part of the DMR standard. What a scan list is often confused with though is a "Receive group list" - which a digital channel may optionally use. This is just a list of talk groups ID's or private ID's that you'd like that particular digital channel to "open squelch" and listen to, in addition to the primary talk group or contact ID the channel is set to. You don't have to set a receive group if you don't want to. An ID is an ID is an ID..... After a time - it dawns on one that, conceptually, contact ID's, radio ID's, and Talk Group ID's - they're all just treated by the radio as nothing more than digital squelch codes - like PL tones (but of course no actual tones used) This is why these DMR radios can be set to listen to just about anything, and make it easy to implement direct-to-handset calls even across a repeater system. All one needs to do is turn on "Digi Mon", otherwise known as "promiscuous mode" on a DMR radio - all of a sudden you can hear everything no matter what, and the reason why is that the radio is simply ignoring whatever (contact/talkgroup/private) ID is assigned to the transmission - and therefore simply plays that transmission out loud. The receiver really doesn't distinguish what type of ID (private contact, talkgroup) in operation, it's just an ID. Classifying those id's into private contacts and or talk groups is a human convention, the radio itself just doesn't care.
  20. You know - if you can pass the Tech license, you have the smarts to figure out DMR. I think DMR gets a bad rap because some folks are just old stuck-in-the-muds. DMR does have it's differences from analog - but of course it does - as it's a way more capable radio. Conceptually - our DMR radios are very much like any locked-down commercial radio - they need to be preprogrammed. But - they don't just *have* to be that way. Chinese radios like the Anytone actually *cater* to hams with ham-friendly features - you can easily punch in a brand new channel and/or talk group from the keypad menus - on a VFO even, in a few seconds. Loading things like rx/tx frequencies and talk groups into channels become second nature - using talk groups is even easier than linking to a reflector. Normally, we store all of the required information in a channel for quick access, but creating a channel on the fly from the keypad is straightforward.
  21. I've been really active on DMR lately with a lot of irons in the fire going. I have an AT-878 HT, and a AT-578 being used as a base station. Albuquerque is a very active DMR town, and we have both the BrandMeister network available, as well as private and semi-private regional DMR (RMHAM, MPRG) clusters as well. I'm able to hit multiple DMR repeaters on Sandia Crest using the base station, but the rolling foot hills here at my QTH make the HT untenable, unless I'm on the top of one. But hey, I can use the HT (and the base too if desired..) with a pi-star hotspot. Even better, since I've set up DMR2YSF cross-mode, I can ragchew with my buddy in Tucson on a YSF reflector. (Tucson is a Yaesu town for sure, and Albuquerque NM has no Yaesu repeaters...) I've wrestled out how to set-up a pi-star from scratch with a blank micro-sd.... pop a msg to me if you need some help. Also, just got myself a new duplex pi-star - which alleviates the problem my other, simplex pi-star has switching talkgroups when someone is already talking. Very-cool - BrandMeister sees the new duplex pi-star as a repeater and, for all intents and purposes it is, but it's just running at 10mw, with about 1/4 mile range. Very cool - two time slots.
  22. It does, but apparently they've disabled the edit field in the CPS for Wide/Narrow in the latest version 1.48 (why?), and of course, it's disabled modifying it via keypad. But, you're a lucky guy after all.... It just so happens that I have a copy of RT76P.exe version 1.45, which does allow you to modify W/N. (I actually broke my Retevis programming cable, so I replaced it with a generic one from Amazon for $9.99 - no big issue.) https://1drv.ms/u/s!AjoUJvZyt8o5iOIgB8Bx6ElB3Hz9DA?e=BqVkCZ I'll have a beer....
  23. They were down for maintenance in the wee-hours last night. I waited for it to go back up and snuck in my application for a ham vanity callsign before they start charging for it. Ka-ching!
  24. A lot depends on a network's backhaul design. If it uses the internet as in myGMRS and other Asterisk-based (voip) linked repeaters - an internet outage is going to bring linked networking down, although the repeater will still work locally. Where I am at, some of the Ham repeater networks here use RF or microwave based backhaul link. They are not reliant on the internet. The only Achilles heel is the usual one all repeaters have, they run on battery backup when the power goes. If the power isn't back up before the battery drains....
  25. GMRS - to me it's like a gateway drug. Two months after getting my GMRS license, I went and got a Technician class ham ticket. Two months after that, I then upgraded that to a General class license. Radio is fun, and I do a lot of rag-chewing on GMRS - but ham radio offers even more opportunities to "play around" with more bands, more modes, digital, CW, and so on. Just bought a used HF rig - it's gonna be a lot of fun.
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