Lscott
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Posts posted by Lscott
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24 minutes ago, WRXD372 said:
We will broadcast (yes, that is a violation of FCC rules, but we are "fighting" for our frequencies) on a regular basis a copy of George Carlin's "Seven Dirty Words" (more violations - but we are "fighting" for our frequencies!).
People likely hear even worse language on the air. That’s in addition to various topics being discussed too. Either people forget talking on the radio is like a huge party line or they just don’t care.
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1 hour ago, intermod said:
We have been using a DMR repeater on GMRS since 2016 (at 2200' elevation).
Is that running under an experimental license from the FCC? If not then you’re asking for the kind of attention from the FCC you don’t want.
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Some radios the CTCSS gets spoofed by the pulsing nature of DMR and the squelch opens.
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3 minutes ago, wqnd300 said:
If you want more frequencies or digital modes go to amateur radio
Could have said the same thing about CB. But as the popularity increased the FCC finally authorized additional channels, from the original 23 to the now 40. And the past year or so added FM mode to the current AM and SSB modes.
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8 minutes ago, intermod said:
But compliant DMR radios don't use both timeslots
You would think so. Trouble is some cheap radios out there may not. I think that was done to eliminate having to worry about which time slot the other radio was using. The first model Baofeng DMR radios were notorious for spamming both times slots. That was OK on simplex but killed the DMR repeaters.
On some of my newer Kenwood DMR radios there is an option to use either the existing DCDM standard, which will decode audio from either time slot, or the newer one where they have to match. -
On 5/29/2023 at 1:07 PM, WRUU653 said:
I do agree that analog will always be here but are you saying the two wouldn't interfere with each other?
I’ll chime in here. What would likely be done is a mixed mode repeater. It auto detects the mode in use. That would still preserve the analog user’s ability to continue to use their equipment. I would DEFINITELY not recommend installing a digital only repeater.
Of course the tiny sticking point is getting the FCC to change the rules to allow ANY digital voice mode on GMRS. And I do have some thoughts on that.
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4 minutes ago, intermod said:
So one can easily fit two DMR signals in the same or less bandwidth of the wideband analog signal and get 2X2 or 4 timeslots (or usable channels).
That’s only true if the radios are able to “effectively” coordinate time slot synchronization between themselves. Usually the repeater does that task. On simplex that has to be done by the user’s radio. The feature is typically referred to as DCDM, dual capacity direct mode. Some radios will just transmit on both time slots in simplex mode.
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2 hours ago, WRQI583 said:
GMRS would have to turn all digital or stay all analog.
Not necessarily. The key is how it’s done and what digital mode.
While I like DMR I don’t think it’s a good candidate to use on GMRS. I believe there are a couple of better choices. As a few other posts have pointed out the principle issues are the existing base of analog radios and just where do you locate the digital channels where they would result in the least interference to analog operations. -
2 hours ago, DirtyCitizen said:
I've heard differing opinions on the topic but using codes, kinda the same way HAMs use Qcodes for shortening communications, could you integrate basic shorthand for your family into an emergency preparedness plan? I'm pretty sure if you need your Emergency plan you won't really have to much time to worry about the FCC. Practicing shorthand Like fire and rescue/police officers and so on in your family I'm thinking may be a bit of a problem because you don't have a way to post it on the web it may be considered encryption instead of data packets. I know you can send encrypted mssgs over Cellular networks and that's just a higher frequency so is it an outdated law? if you're not causing interference I don't see the problem but it seems to be a sensitive subject and in the case of say a violent mob using radio to monitor say Bernie Sanders supporters, you really can't effectively organize an egress out of a dangerous area.. and practice makes perfect so I would say the ability to practice is pretty important.. Just looking for input. and not a Mittens or B. Sanders fan.
In an emergency situation codes could be detrimental. This is a particular concern when trying to relay information between services. For example a person switching operation between let’s say a GMRS radio and a public service radio.
Different services, and even on the same one, the codes could be dissimilar between departments. Getting the codes mixed up resulting in delayed or missed directed resources has very serious consequences. Plain language avoids the confusion.
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29 minutes ago, wqnd300 said:
Then stop putting repeaters on top of other repeaters! Simple solution because you don't need more than a few. Here in Southern California we have idiots that need to shut up and allow others to periodically use the frequency. Those are the real issues.
Sent from my SM-S918U using Tapatalk
One other point. Just how many people check to see if they can reliably communicate using simplex? If they can then they should stay off the repeater, use simplex, and let those who REALLY need it the access.
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It looks like I will likely be making a business trip to the UK in the next few weeks or month. I was considering taking one or two of my HT’s with me on the trip. I’ve researched what I need to have for Ham operation. However their license free service, PMR446, appears to be very popular.
The sticking point is there are two different digital modes used, DMR tier 1 and dPMR. That’s in addition to narrow band FM. Neither are compatible with the other.
My dilemma is which of the two digital modes is used the most? If it’s DMR I can use my NX-1300. I’ve been doing some research and it seems to be DMR, but that’s based on the availability of the radios I see being sold. If it’s dPMR I’m out of luck, though it is similar to NXDN but uses a different protocol, in which case I would likely use FM. -
On 5/22/2023 at 12:19 AM, WRKC935 said:
setup a buy that will happen later this week of an APX 7000 V/U r1 for 1500
I downloaded the brochure for the radio. Looks very nice. There seems to be several variations of it, display and key pad types. Which one are you getting?
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I understand the CODEC differences.
To make the radio a bit more “universal” Kenwood could have included dPMR which is used in the EU for both their license free and commercial services. It’s a close relative to NXDN. It’s not used in North America in a significant way currently. That could change.
There is the option to use several different CODECS which is encoded in the OTA protocol. That would have allowed the use of the existing one for D-Star.
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1 hour ago, tweiss3 said:
Looking more at this D75, I probably won't get one since I have the D74, unless new features are announced at the Tokyo hamfest end of the year. I'm more excited to see the D710 "replacement" announced at Tokyo than this HT.
It looks like just an incremental upgrade over the D74. If it did DMR that would get my attention or a multi mode digital. But it’s not.
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I showed the rep their NX-1300DUK5 I was using to talk to my buddy, had his D878, using DMR. The rep said they were using the NX-5000’s themselves there.
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On 5/19/2023 at 10:54 AM, WRXE944 said:
How much new? Estimates?
I see a used 74 for $900+
I’ve seen them for $1000 plus on ebay. Stupid when I only paid $650 for mine new from HRO.
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You just don’t know what you’ll see here.
- tweiss3, wayoverthere and WRTT642
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Sample on display.
- WRTT642, wayoverthere and Sshannon
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Live from Hamvention.
- wayoverthere and WRTT642
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On 5/16/2023 at 12:19 AM, WRUU653 said:
Well I may be chiming in a bit late but like @WRHS218 I have also picked up railroad traffic with my KG-935G Plus. Frequencies here are in the 160.’s
Railroad frequencies.
Railroad - Scanner Frequencies and Radio Frequency Reference.pdf
- WRUU653 and SpeedSpeak2Me
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New Repeater Channels for GMRS in 2024
in FCC Rules Discussion
Posted
That’s the FCC being lazy. It was the easy way out to fix their F’up in the first place by allowing the sale of dual use radios, FRS/GRMRS. What was previously illegal is now just fine, no enforcement action need. Expecting people to read that slip of paper advising them not to use channels above 14 without a license mostly never happened considering the license cost at the time. For $29.95 for a pair of what looks like kids two-way radios all anyone cared about is how to turn it on and where you open it to stick the batteries in.