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WEEKLY NEWS

Provided by Phil Byrne VK2MCB

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Roar Nets February 24th and February 26th 2019

 

ROAR Nets Report for Sunday 24 February and Tuesday 26 Febuary 2019
 
Digital Net
From Phil VK2MCB

The plan was again to hold a Digital Net on XRF299 R (Dstar) on 24Feb at 2100Z. Again, the Reflector failed. John ZL2JPM has sent some suggestions in regard to DSTAR/Peanut usage which hopefully will avoid such problems in the future. So, please consider the following advice and hope to see you again at 2100z on XRF299 R on 3 March.
 
To our ROAR DSTAR Users

It is exciting to see the growth in traffic on the ROAR Module of XRF299 – frequently welcoming new DSTAR users – particularly those who are challenging to access via HF.

However, using digital modes that rely on internet traffic requires that we recognise that we don’t get the “speed of light” experience that HF delivers! The speed of digital transmissions over the internet can sometimes be quite slow – packet speeds are not guaranteed and can vary significantly over an interval of a few seconds. Besides, reflector users might all be on quite different internet speeds - ranging from a few Mb/sec to over 1Gb/sec. Add to this the inevitable packet delays and hand-offs between real RF DSTAR repeaters, PC/Android stations (e.g. Peanut), hybrid stations that use radios and hotspots (e.g. Pi-Star). To achieve consistent quality from these differing access techniques, it would be helpful if everyone follows a few simple rules.

1. To see what is going on, please log into the reflector dashboard www.xlx299.nz. This will display everyone on the reflector, but only those with access via radios or hotspots will appear on Module R with their individual call-signs. Those linking via Peanut, for example, will currently not be shown on the Module, but will be represented as PA7LIM. Note that all individual call-signs will be displayed in the scrolling left-hand panel along with their linked module (in our case R). Everyone’s radios or Hotspots will still faithfully record individual call-signs on their displays for accurate logging.

2. Logging onto the reflector dashboard makes it easy to spot new participants and reduces the necessity for uncontrolled “Break-ins”. Uncontrolled “Break-ins” can cause packet losses everywhere as the various equipment (radios, reflector, hotspots, etc.) competes to synchronise with the “Break-In”. So if you spot a newcomer on the Module dashboard, the best way is to acknowledge that call-sign and invite participation in a controlled way (e.g. “welcome ZL2JPM to Module R, please come in after VK2MCB”).

3. When handing over to the next call-sign, be patient on Sign-off and Sign-on. On Sign-off; stop talking, wait a full second and release your key. On Sign-on; wait a full two-three seconds, Key-on, wait a second and commence the QSO. These delays give the linked systems time to complete their hand-shaking and the result is usually a very clean hand-over with no packet loss. The techniques are similar to those used on linked analogue repeaters, but the DSTAR delays need to be a bit longer as there is more processing and the addition of uncontrolled packet delays.

With a bit of practice on the above, I’m confident that we’ll have an excellent DSTAR experience on XRF299 R.

Kind regards
John Moriarty (ZL2JPM)
 
Sunday 24th February 2019
0800z - 0830z Anzo Net on 7,105 +/- QRM
From Bill VK4ZD
Peter VK3KCD was 59 and gave me 59
Phil VK2MCB was 58-9+5 and gave me 59
John ZL2JPM was 58 and gave me 58 also
 
From Phil VK2MCB
Bill VK4ZD was 59 and gave me 58
Peter VK3KCD was 57 and gave me the same
John ZL2JPM was 33-43 and gave me 43
  
0830z-0930z Europe - Anzo Net on 14,295.2 Long Path
From Bill VK4ZD
Nil Activity due to European OHR
 
From Phil VK2MCB
Nothing going on for me on 20m.
 
0900z - 1000z UK 80-metre Net on 3,694
No report Received
 

1900z-1930z NA Transcontinental net on 7.185
No report Received
 

0830z Tuesday February 26th EUR 20m net on 14,295.2
From Bill VK4ZD
Nil Activity
 
From Phil VK2MCB
No contact on any stations
 
73
Phil VK2MCB

 

Philip Byrne
Rotary Club of Canberra
Australia
E: philipbyrne@bigpond.com

Weekly Report