DMR (TDMA) 446

Licence free two-way radio services that now includes both FM and digital channels. Discuss models, modifications and other similar worldwide standards such as FRS and GMRS.
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gmham
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Re: DMR (TDMA) 446

Postby gmham » 02 Jan 2017, 12:46

Okay cheers you know your stuff !!


Just noticed some off my programmed channels have a little red and blue shield showing at top off screen what this ?
- Yaesu FT991 - Superstar 360FM / Alinco DR 135DX / Maxcom 30E / Ameritron ALS-600X - Cushcraft r6000 / Carolina windom 80s / Heil PR40 / W2IHY.

108-TM-154 - John


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Re: DMR (TDMA) 446

Postby Admiral » 02 Jan 2017, 12:49

That means they are digital, blue and red are unencrypted, blue and yellow mean encrypted.

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Re: DMR (TDMA) 446

Postby gmham » 02 Jan 2017, 12:59

One day, just one day I might just know as much as you !!
so happy that I have finally got there with the programming etc mate can only thank you and the others so much for the kind patience shown - cheers
- Yaesu FT991 - Superstar 360FM / Alinco DR 135DX / Maxcom 30E / Ameritron ALS-600X - Cushcraft r6000 / Carolina windom 80s / Heil PR40 / W2IHY.

108-TM-154 - John


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Re: DMR (TDMA) 446

Postby Admiral » 02 Jan 2017, 13:04

gmham wrote:One day, just one day I might just know as much as you !!


I am as thick as they come mate, I have only been dabbling with DMR for just over a year, it's only stuff I've picked up along the way, I have no idea about the nuts and bolts of it like some, just how to use it.

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Re: DMR (TDMA) 446

Postby gmham » 02 Jan 2017, 13:11

Yep okay fair enough suppose a bit longer than my xmas day onwards experience !! funny just could not get my head around it and then it clicked and I am chuffed with myself now !! the main think which impressed me is the audio on DMR , its so clear isnt it !! you noticed any day to day range increase on 446mhz with using digital as opposed to analog ?
- Yaesu FT991 - Superstar 360FM / Alinco DR 135DX / Maxcom 30E / Ameritron ALS-600X - Cushcraft r6000 / Carolina windom 80s / Heil PR40 / W2IHY.

108-TM-154 - John


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Re: DMR (TDMA) 446

Postby Admiral » 02 Jan 2017, 13:24

Obviously the main advantage of digital is that as it's 1s and 0s then the signal is either there or not there, there is that odd area where it goes 'daleky' like a GSM phone on the outer edge of a cell before passing to the next, so it doesn't taper off like analogue, the audio is just as good on the envelope edge as it is sitting next to the transmitter.

I've heard people suggest that they don't like the sound of DMR, but they obviously haven't listened to too much SSB wafting in and out.

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Re: DMR (TDMA) 446

Postby gmham » 07 Jan 2017, 13:09

Okay programmed in one off the digital DMR channels on 446mhz on both radios ( 2x zastone d900 ) for some reason I can get any audio out off them. The green light will show on the receiving unit. Red light on transmitting radio,but just nothing audio wise...any ideas ?

Working fine on regular analogue 446mhz so obviously something wrong within my settings ?
Would post a screenshot off the settings but not sure how to on a windows PC ?
- Yaesu FT991 - Superstar 360FM / Alinco DR 135DX / Maxcom 30E / Ameritron ALS-600X - Cushcraft r6000 / Carolina windom 80s / Heil PR40 / W2IHY.

108-TM-154 - John


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Re: DMR (TDMA) 446

Postby thelad » 07 Jan 2017, 13:17

Print screen button?
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Re: DMR (TDMA) 446

Postby gmham » 07 Jan 2017, 13:42

Okay will have a look when I am home. Its windows 10 I am using.
- Yaesu FT991 - Superstar 360FM / Alinco DR 135DX / Maxcom 30E / Ameritron ALS-600X - Cushcraft r6000 / Carolina windom 80s / Heil PR40 / W2IHY.

108-TM-154 - John


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Re: DMR (TDMA) 446

Postby gmbusman » 14 Jan 2017, 20:02

Is it me or is the tyt md380g amazing 3.54 miles fc and clear as day dmr but it so hard to get used to the screen compare to a anolouge pmr but what a beast
Last edited by gmbusman on 15 Jan 2017, 19:15, edited 1 time in total.
Uniden Bearcat UBC-125XLT Scanner
Baofeng 888s Max x2 (red) very difficult to program use BF-480
TYT MD-380G
kydera DP-550S
WLN KD-C1
CRT SS7900
Moonraker Gap-H 1/2wave (when up)
Broadcasting from Stockport SK1
callsign's gmbusman 26-TM-780
on channel 8 pmr and 25 fm cb (when set up) mostly

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radiosification
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Re: DMR (TDMA) 446

Postby radiosification » 15 Jan 2017, 18:19

gmbusman wrote:Is it me or is the tyt md380 3.54 miles and clear as day dmr so hard to get used to the screen compare to a pmr but what a beast

Sorry but... what? :eh:
If you're interested in digital, check out my YouTube channel:
http://www.youtube.com/radiosification

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Re: DMR (TDMA) 446

Postby gmbusman » 16 Jan 2017, 15:08

radiosification wrote:
gmbusman wrote:Is it me or is the tyt md380 3.54 miles and clear as day dmr so hard to get used to the screen compare to a pmr but what a beast

Sorry but... what? :eh:


Been edited
Uniden Bearcat UBC-125XLT Scanner
Baofeng 888s Max x2 (red) very difficult to program use BF-480
TYT MD-380G
kydera DP-550S
WLN KD-C1
CRT SS7900
Moonraker Gap-H 1/2wave (when up)
Broadcasting from Stockport SK1
callsign's gmbusman 26-TM-780
on channel 8 pmr and 25 fm cb (when set up) mostly

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gmham
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Re: DMR (TDMA) 446

Postby gmham » 28 Jan 2017, 21:30

Image

Sorry been a while getting back to you guys following me question on why my two Zastone DM900`s were not communicating with each other on 446mhz when programmed with a digital channel, as I say they will light red on tx and the other will light green when receiving signal will just not sound the audio. anyone spot the mistake ?!
- Yaesu FT991 - Superstar 360FM / Alinco DR 135DX / Maxcom 30E / Ameritron ALS-600X - Cushcraft r6000 / Carolina windom 80s / Heil PR40 / W2IHY.

108-TM-154 - John


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radiosification
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Re: DMR (TDMA) 446

Postby radiosification » 29 Jan 2017, 21:35

Put a contact in the contact name. I don't know how you're transmitting without that, unless you're going into contacts every time.
If you're interested in digital, check out my YouTube channel:
http://www.youtube.com/radiosification

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Admiral
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Re: DMR (TDMA) 446

Postby Admiral » 30 Jan 2017, 06:37

In theory you don't need a contact name if you have a defined grouplist.


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