Date   

Re: TCP/IP Over Packet

"John D. Hays" <john@...>
 

You will be able to use DD on the UDR either as an Ethernet bridge (with TCP/IP as the encapsulated protocol) or setup each UDR as a router with the DD bridge between them. 

The router approach is better if you need to manage traffic due to link speed.

We'll have application notes for this at release, but yes you can bridge networks over DD.  


John D. Hays
K7VE
PO Box 1223, Edmonds, WA 98020-1223 
  





On Thu, May 30, 2013 at 10:18 AM, Steve <ve7cbh@...> wrote:
 

Your comment about D-star DD for TCP/IP interests me. Being a D-star newby, how difficult will it be to setup a TCP/IP bridge between two network segments (on the same subnet)using the UDR?

Steve
VE7CBH


Re: TCP/IP Over Packet

"Curt, WE7U" <curt.we7u@...>
 

On Thu, 2 May 2013, avignonmimi@... wrote:

Back in the late 90's we had a pretty good TCP/IP link from OKC to North Texas.

Actually, we used a TheNet IP node to bang the connected mode packets against to get an ACK, and then the rest of the link was ROSE. ROSE worked 100% better than pure IP nodes.

Here locally we also experimented with larger packet lengths between PC's where we were running JNOS. You definitely want to go with larger packets at speeds 9600 and up.

The obsolete AX.25 was designed for Z-80 boxes with little memory. PC's have plenty of memory for buffers. It was also designed for only 6-char callsigns, and I think some countries are issuing more letters than that. The repeater feature of AX.25 is also highly deprecated.
I seem to remember that we were using 1024-byte packets over 9600 baud in the Seattle area on TCP/IP back in the early 90's, and UI frames.

As soon as I get a box in my hand I'll be trying to do the same or better on 56k.

--
Curt, WE7U. http://wetnet.net/~we7u
Windows ate my homework!


Frequencies, Band Plans and other annoyances

"k7udr" <bhhoyer@...>
 

As we move forward to deployment, it occurs to me that the landscape for operating frequencies is anything but stable.

Here in Western Washington we have 19 - 25kHz simplex channels designated as packet, of which only 3 are contiguous, such that we could use them as a 100kHz high speed channel.

We also have 3 pairs designated as packet repeaters.

What are your thoughts on how to deploy the UDR in your area, particularly once we move past the current 4800 NB and 9600 baud rate limitations.

Bryan - K7UDR


Re: Frequencies, Band Plans and other annoyances

PE1RDW <pe1rdw@...>
 

On Wed, 05 Jun 2013 21:46:23 +0200, k7udr <bhhoyer@...> wrote:

As we move forward to deployment, it occurs to me that the landscape for operating frequencies is anything but stable.

Here in Western Washington we have 19 - 25kHz simplex channels designated as packet, of which only 3 are contiguous, such that we could use them as a 100kHz high speed channel.

We also have 3 pairs designated as packet repeaters.

What are your thoughts on how to deploy the UDR in your area, particularly once we move past the current 4800 NB and 9600 baud rate limitations.

Bryan - K7UDR
In europe it should be no problem, region one has about 200 khz for duplex/relais packet, 400 khz simplex packet, and 3 all mode sections, one 500 khz, one 400 khz and one 600 khz, offcourse the all mode section are also used for wide band fm communication so might not always be available but are still often the best suited because in the simpelx and duplex packet sections are still a lot of laps active at 9k6

--
73 Andre PE1RDW


Re: TCP/IP Over Packet

"avignonmimi@..." <avignonmimi@...>
 

I'm scratching my head for memory, but I seem to recall setting the MTU to 4 times the PACLEN so that only one TCP and one AX.25 overhead packet was sent, and the other 3 packets were just data. This was for JNOS to JNOS. That was a real advantage of VC (connected mode on JNOS).

Course that feature would gag a netrom or rose switch, ha.

--- In UniversalDigitalRadio@..., "Curt, WE7U" <curt.we7u@...> wrote:

I seem to remember that we were using 1024-byte packets over 9600 baud in the Seattle area on TCP/IP back in the early 90's, and UI frames.

As soon as I get a box in my hand I'll be trying to do the same or better on 56k.


Re: Frequencies, Band Plans and other annoyances

"avignonmimi@..." <avignonmimi@...>
 

East and West coasts could be a problem with Navy/USAF radars. The USAF created a UHF ham-free zone around the west coast Pave Paw radar.

Kantronics built their data radio for the 430 band back in the 90's, to keep it out of narrow band repeater space. Most common catalog ham antennas are cut for 440 though, so you had to buy more expensive satellite antennas, or build your own.

It would be nice if someone made a circular polarized antenna with a left or a right pattern, so they could be used terrestrially.

--- In UniversalDigitalRadio@..., "k7udr" <bhhoyer@...> wrote:

As we move forward to deployment, it occurs to me that the landscape for operating frequencies is anything but stable.


Re: Frequencies, Band Plans and other annoyances

M5AKA <m5aka@...>
 

--- On Sat, 8/6/13, avignonmimi@... <avignonmimi@...> wrote:
It would be nice if someone made a circular polarized antenna with
a left or a right pattern, so they could be used terrestrially.
The only problem might be whether to use Left or Right circular as there's 30 dB's attenuation between the two.

The IARU recommends using Right-hand Circular, see 8.8.7 of the VHF Handboook at
http://www.iaru-r1.org/index.php?option=com_remository&Itemid=173&func=fileinfo&id=178

Circular antennas are available from Wimo
http://www.wimo.de/helix-antennas_e.html

73 Trevor M5AKA


Re: Frequencies, Band Plans and other annoyances

"brad_ka3yan" <bradm75@...>
 

Bryan,

I'm in the Charleston, SC area. While I haven't had any issues personally with channelization in the 70cm band, I would have to consult with the governing body before I open my mouth and say something wrong. The South Eastern Repeater Association (SERA) handles frequency coordination in my area.

Their website states:

439.6000 - 440.4750 FM Digital/Packet Operation
440.5125 - 440.7250 NB Digital Repeater Outputs/Duplex Backbones/Link
440.9125 - 441.1750 Simplex Digital
445.0250 - 445.4750 Digital
445.5125 - 445.7250 Digital Repeater Inputs
446.5000 Simplex Digital

Narrow Band FM Digital/Packet Repeater or Digital/Packet
Duplex Backbone
18 Duplex Channels, 12.5 KHz split, 5 MHz split, High input - Low output
445.5125 - 440.5125 445.5250 - 440.5250 445.5375 - 440.5375
445.5500 - 440.5500 445.5625 - 440.5625 445.5750 - 440.5750
445.5875 - 440.5875 445.6000 - 440.6000 445.6125 - 440.6125
445.6250 - 440.6250 445.6375 - 440.6375 445.6500 - 440.6500
445.6625 - 440.6625 445.6750 - 440.6750 445.6875 - 440.6875
445.7000 - 440.7000 445.7125 - 440.7125 445.7250 - 440.7250

Wide Band Digital/Packet Duplex Backbones/Links
19 Duplex, Mixed 50/100 KHz, 5 MHz split, High input, Low output,
horizontal or vertical polarization optional
445.0250 - 440.0250 445.0500 - 440.0500 445.0750 - 440.0750
445.1000 - 440.1000 445.1250 - 440.1250 445.1500 - 440.1500
445.1750 - 440.1750 445.2000 - 440.2000 445.2250 - 440.2250
445.2500 - 440.2500 445.2750 - 440.2750 445.3000 - 440.3000
445.3250 - 440.3250 445.3500 - 440.3500 445.3750 - 440.3750
445.4000 - 440.4000 445.4250 - 440.4250 445.4500 - 440.4500
445.4750 - 440.4750

Narrow Band FM Digital/Packet Simplex
440.9125 440.9250 440.9375 440.9500 440.9625 440.9750
440.9875 441.0000 441.0125 441.0250 441.0375 441.0500
441.0625 441.0750 441.0875 441.1000 441.1125 441.1250
441.1375 441.1500 441.1625 441.1750

Let me just say, the band is not crowded here. I'm actually operating my Winlink 9600bps Packet RMS out of the band plan in 441.050, but its because my radio is crystalled for that freq. I haven't gotten any complaints and I seriously doubt I will. Like I said, this area is not heavily trafficed in the 70cm band.

73,
Brad, KA3YAN

--- In UniversalDigitalRadio@..., "k7udr" <bhhoyer@...> wrote:

As we move forward to deployment, it occurs to me that the landscape for operating frequencies is anything but stable.

Here in Western Washington we have 19 - 25kHz simplex channels designated as packet, of which only 3 are contiguous, such that we could use them as a 100kHz high speed channel.

We also have 3 pairs designated as packet repeaters.

What are your thoughts on how to deploy the UDR in your area, particularly once we move past the current 4800 NB and 9600 baud rate limitations.

Bryan - K7UDR


N connector Male or Female?

"marklfriedlander" <marklfriedlander@...>
 

I see the specs for the UDR56K specify "RF Connector: Type N" but is it male or is it female?

Thanks,
Mark KV4I


Re: N connector Male or Female?

"k7udr" <bhhoyer@...>
 

Female

--- In UniversalDigitalRadio@..., "marklfriedlander" <marklfriedlander@...> wrote:

I see the specs for the UDR56K specify "RF Connector: Type N" but is it male or is it female?

Thanks,
Mark KV4I


Re: Frequencies, Band Plans and other annoyances

"Douglas" <dperv27@...>
 

Here in Connecticut, we don't have a published 70cm Band Plan. I've asked for our Spectrum Manager for his input, but he is out of town on business and will discuss with me when he returns. I suggested we adopt the Northern California Band Plan:

http://ncpa.n0ary.org/overall_70_cm_band_plan.pdf

More info to follow..

--73 de N1OBU (Doug)(FN41AN)

--- In UniversalDigitalRadio@..., "k7udr" <bhhoyer@...> wrote:

As we move forward to deployment, it occurs to me that the landscape for operating frequencies is anything but stable.

Here in Western Washington we have 19 - 25kHz simplex channels designated as packet, of which only 3 are contiguous, such that we could use them as a 100kHz high speed channel.

We also have 3 pairs designated as packet repeaters.

What are your thoughts on how to deploy the UDR in your area, particularly once we move past the current 4800 NB and 9600 baud rate limitations.

Bryan - K7UDR


Updated Youtube demo of the UDR56K-4?

"Douglas" <dperv27@...>
 

Developers,

I'm trying my hardest to spread the word about the UDR56K-4 here in CT, but many hams have adopted the "proof is in the pudding" theory.

Would it be possible to record and post an actual demo of the UDR56K-4's capabilities on Youtube? (The last discussion was Pacificon 2012 back in Oct 2012)

--73 de N1OBU (Doug)(FN41AN)


Re: Frequencies, Band Plans and other annoyances

"avignonmimi@..." <avignonmimi@...>
 

I was thinking one station could have right-hand, but then to communicate the next station would need left-hand (two antennas pointed at each other).

Wimo only sells right-hand, as they sell to the satellite market, where only the satellite needs to be left-hand.

--- In UniversalDigitalRadio@..., M5AKA <m5aka@...> wrote:

Circular antennas are available from Wimo
http://www.wimo.de/helix-antennas_e.html

73 Trevor M5AKA


Re: Updated Youtube demo of the UDR56K-4?

"avignonmimi@..." <avignonmimi@...>
 

There needs to be a release date (4Q 2015) or something like that, for most to start saving money. Otherwise they will probably go out and buy a WiFi router :-)

Then too, 70cm may just go away in North America as the Government takes over the band.

I wish there was two or three Local Oscillators though, as the embedded Linux could be used to do a slow frequency hopper over (say) 5 MHz.

--- In UniversalDigitalRadio@..., "Douglas" <dperv27@...> wrote:

Developers,

I'm trying my hardest to spread the word about the UDR56K-4 here in CT, but many hams have adopted the "proof is in the pudding" theory.


Re: Updated Youtube demo of the UDR56K-4?

Matthew Pitts <daywalker_blade_2004@...>
 

Actually, it's Q3 2013, which starts next month. I mean, they HAVE been taking preorders for the hardware for several months now.

Matthew Pitts
N8OHU

Sent from Yahoo! Mail on Android



From: avignonmimi@... ;
To: ;
Subject: [UniversalDigitalRadio] Re: Updated Youtube demo of the UDR56K-4?
Sent: Wed, Jun 12, 2013 11:37:54 AM

 

There needs to be a release date (4Q 2015) or something like that, for most to start saving money. Otherwise they will probably go out and buy a WiFi router :-)

Then too, 70cm may just go away in North America as the Government takes over the band.

I wish there was two or three Local Oscillators though, as the embedded Linux could be used to do a slow frequency hopper over (say) 5 MHz.

--- In UniversalDigitalRadio@..., "Douglas" wrote:
>
> Developers,
>
> I'm trying my hardest to spread the word about the UDR56K-4 here in CT, but many hams have adopted the "proof is in the pudding" theory.


Re: AW: Frequencies, Band Plans and other annoyances

"siegfried jackstien" <siegfried.jackstien@...>
 

Both antennas right hand is ok

Only if you use moon-bounce the direction of the waves change from right to
left

Look at 2 screws (and one nut on one of them represents the signal)

If both are normal direction you can turn the nut from one on to the other
(if the faces of the 2 screws are close enough)

Radiowaves behave the same (but distance between screws is higher and there
is no nut hi hi)

Dg9bfc

sigi

-----Ursprüngliche Nachricht-----
Von: UniversalDigitalRadio@...
[mailto:UniversalDigitalRadio@...] Im Auftrag von
avignonmimi@...
Gesendet: Mittwoch, 12. Juni 2013 11:29
An: UniversalDigitalRadio@...
Betreff: [UniversalDigitalRadio] Re: Frequencies, Band Plans and other
annoyances



I was thinking one station could have right-hand, but then to communicate
the next station would need left-hand (two antennas pointed at each
other).

Wimo only sells right-hand, as they sell to the satellite market, where
only the satellite needs to be left-hand.

--- In UniversalDigitalRadio@...
<mailto:UniversalDigitalRadio%40yahoogroups.com> , M5AKA <m5aka@...>
wrote:

Circular antennas are available from Wimo
http://www.wimo.de/helix-antennas_e.html

73 Trevor M5AKA



Re: Updated Youtube demo of the UDR56K-4?

Tom Hayward <esarfl@...>
 

On Wed, Jun 12, 2013 at 4:37 AM, avignonmimi@...
<avignonmimi@...> wrote:

There needs to be a release date (4Q 2015) or something like that, for most to start saving money. Otherwise they will probably go out and buy a WiFi router :-)
I started saving money when it was first announced and by now I have
enough savings for 2 or 3 :-)

Tom KD7LXL


Re: Updated Youtube demo of the UDR56K-4?

"John D. Hays" <john@...>
 

Pre-order is open for 2 and 1/2 months -- until this Saturday http://nwdigitalradio.com/pre-order

We are planning for Q3 production for delivery -- we will update if that changes.


John D. Hays
K7VE
PO Box 1223, Edmonds, WA 98020-1223 
  



On Wed, Jun 12, 2013 at 7:47 AM, Matthew Pitts 

 

Actually, it's Q3 2013, which starts next month. I mean, they HAVE been taking preorders for the hardware for several months now.

Matthew Pitts
N8OHU



Re: Updated Youtube demo of the UDR56K-4?

"avignonmimi@..." <avignonmimi@...>
 

I still have a couple Kantronics D4-10 data radios (12 watt), but those radios had a bad oscillator design, as they drifted all over the place. Work fine in a heated room, but at a tower site they need to be temperature controlled somehow.

Hopefully this radio will have a TCXO onboard.

--- In UniversalDigitalRadio@..., Matthew Pitts <daywalker_blade_2004@...> wrote:

Actually, it's Q3 2013, which starts next month. I mean, they HAVE been taking preorders for the hardware for several months now.

Matthew Pitts
N8OHU


Re: Updated Youtube demo of the UDR56K-4?

Michael Carey <michaelcarey@...>
 

Me too, but my savings have become less valuable!!

My concern now is that the $AU value has dropped against the greenback in the last month!  A few months ago the $AU bought around US$1.05 (-: ... now it's at US$0.94 )-: !!

I hope it doesn't drop too much more!

73

Michael
VK5ZEA

On 13/06/2013 02:22, Tom Hayward wrote:
 

On Wed, Jun 12, 2013 at 4:37 AM, avignonmimi@...
<avignonmimi@...> wrote:
>
> There needs to be a release date (4Q 2015) or something like that, for most to start saving money. Otherwise they will probably go out and buy a WiFi router :-)

I started saving money when it was first announced and by now I have
enough savings for 2 or 3 :-)

Tom KD7LXL