Difference between revisions of "Project:Packet Radio/Bulletin/1807"

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(August 2018 bulletin)
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   _____
 
   _____
   \ | /    L O N D O N  H A C K S P A C E             July 2018 update
+
   \ | /    L O N D O N  H A C K S P A C E           August 2018 update
 
     \|/    P A C K E T  R A D I O                        to HACKRS@GBR
 
     \|/    P A C K E T  R A D I O                        to HACKRS@GBR
 
     |      ____________________________________________________________
 
     |      ____________________________________________________________
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      ---===( NEXT MEETING: TUESDAY 24 JULY 2018 AT 19:00 )===---
 
  
Join  us for  another  hilltop  get-together and  enjoy  the fine  views
+
  ---===( NEXT MEETING: THURSDAY 13 SEPTEMBER 2018 AT 18:00 )===---
and  the radio  connectivity! We'll  meet  by the  Royal Observatory  in
 
Greenwich, near the clock, maybe sitting around a picnic table. Everyone
 
welcome, as  usual. If you  get lost, give us  a shout on  433.500MHz or
 
have a look on APRS for our  location. With any luck, we'll have an APRS
 
'live object' called HACKRS letting others  know of the event, thanks to
 
Julian M0IPU.
 
  
The last meeting on 19 June 2018 was a lot of fun. Sam M0SKF had brought
+
It looks  likely that  this will  be the  last hilltop  get-together, at
some antennas and a camera tripod on his bike in the hope of connecting
+
least  for 2018.  As  usual,  we'll meet  by  the  Royal Observatory  in
to either GB7NWG in Wood Green or GB7CIP in CaterhamWith Mat 2E0TPS
+
Greenwich, nearish the clock. Everyone is welcome - look for bikes,
and others he managed to get a reliable connection to  both, using his
+
antennas, that sort  of thingIf you get lostsomeone should be
Kenwood TH-D74 in KISS modeElsewhere on the picnic table, ongoing
+
listening out on 433.500MHz. We even have an object on APRS -
experiments aiming to get onto packet with only a Baofeng and a
+
https://aprs.fi/info/a/HACKRS - look for HACKRS. Being September, the
Raspberry Pi developed further. Three people were inquisitive enough
+
meeting will likely be a bit darker and damper than usual. It might even
about what we were doing to stop and chat to  us about radioand we
+
rain, so check the wiki page (URL in the header) to check whether we've
enjoyed a pleasant evening until the park closed.
+
decided to go to a pub instead.
  
 +
=> Note the earlier time of 18:00; this is to allow for the fact that <=
 +
=> the van to throw us out of the park appears at 20:00 in September! <=
  
                      ---===( GB7NWG NEWS )===---
+
An amateur-to-be, George, came along to our last meeting and we told him
 +
a bit about  what radio is all  about. Others stopped to ask  what it is
 +
we're doing or just to let us know  that they are into radio too. On the
 +
table, Mat and Sam were testing out a couple of antennas for packet, one
 +
on a bike-mounted pole and one on a cord slung over a nearby tree.
  
Testing  continues, but  it  seems like  the new  node  is reliable  and
 
supports nice steady connections. The next  stage is to get a packet BBS
 
running there.  Ideas for other  programs and  facilities to run  on the
 
node are welcome. GB7NWG is listening for your call on 144.925MHz!
 
  
 +
                    ---===( HACKSPACE NEWS )===---
  
                        ---===( TNC POOL )===---
+
The hackspace  is returning, thanks to  a band of helpers.  Regular open
 +
evenings have started again on Tuesdays at 7pm, the network is going in,
 +
and work areas  are being installed. The more members  who can help, the
 +
faster the space will be open. Get in touch if you can help!
  
A reminder: Any London Hackspace member may borrow from this pool to get
 
their packet station going as quickly and easily as possible, whether it
 
is  for participation  in  the  packet network  or  other amateur  radio
 
projects at the Hackspace. The status  of the TNC pool remains unchanged
 
from last month:
 
  
    (T1) AEA PK-232, with manual (M1);
+
                  ---===( TWO MEMBERS LEVEL UP )===---
    (T2) AEA PK-232MBX, with mailbox capability;
 
(T3/T4) Two Pac-Comm Tiny-2s;
 
    (T5) AEA PK-88 with manual (M2);
 
    (M3) 'G4VRQ's Beginner's Guide to Packet Radio' booklet;
 
    (S1) PC-Pakratt 2 software, with manual, 5.25" and 3.5" floppies.
 
    (S2) PC-Pakratt/PK-88, with handbook and 3.5" floppy.
 
  
We're looking for  testers for these TNC, and loans  of old transcievers
+
Mat 2E0TPS is now M0XPX and Michael 2E0KRV is now M0ISR! In other words,
to make  ready-to-go packet stations. If  you'd be interested in  such a
+
both have achieved full licence status. Congratulations to both of them!
station, please get in touch.
 
 
 
Related to this,  Marrold 2E0SIP has started a  'Radio Programming Cable
 
Library'. Instead  of paying lots for  a cable just to  program your new
 
radio, you can borrow one from a friendly Hackspace member. The list can
 
be found at:
 
http://wiki.london.hackspace.org.uk/view/Radio_Programming_Cable_Library
 
  
  
Line 75: Line 56:
  
 
The network map shows the users  interested in connecting via packet and
 
The network map shows the users  interested in connecting via packet and
the success with which they have established  connections. Julian M0IPU
+
the success with which they have reported establishing connections. The
has reliably connected, and we welcome him to the network!
+
maps remain  unchanged from  last month,  though there  was a  flurry of
 
+
interest in packet on the mailing list.
I must now admit a shocking error found in the network maps for the last
 
few months. A sign error was causing GB7NWG to be plotted to the east of
 
the meridian and not the west.  This has been corrected below, showing a
 
network spread far more in the north-south axis than the east-west axis.
 
It looks like we  need more west and east Londoners to  join in and make
 
our network a bit wider!
 
  
 
,----------------------------------------------------------------------.
 
,----------------------------------------------------------------------.
 
|                      GB7NWG      __..--+ M0IPU                      |
 
|                      GB7NWG      __..--+ M0IPU                      |
|                    (M0SKF) +--"""                                  |
+
|                    (M0SKF) o--"""                                  |
 
|                            |\_                                      |
 
|                            |\_                                      |
 
|                      M0OKE .'+ \                                    |
 
|                      M0OKE .'+ \                                    |
|                            |    )+ 2E0TPS                            |
+
|                            |    )+ M0XPX                            |
 
|                          .' +-" 2E0RLZ                              |
 
|                          .' +-" 2E0RLZ                              |
 
|                          |  |                                      |
 
|                          |  |                                      |
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|                        |.'                      o  repeater or node  |
 
|                        |.'                      o  repeater or node  |
 
|                GB7CIP  ||                      --- reliable link    |
 
|                GB7CIP  ||                      --- reliable link    |
|                (G4APL) +                       ... occasional link  |
+
|                (G4APL) o                       ... occasional link  |
 
`----------------------------------------------------------------------'
 
`----------------------------------------------------------------------'
  
Because this is hard  to see, the map below is plotted with a distorted
+
Because this is pretty narrow, here is a stretched version:
aspect ratio..
 
  
 
,---------<--------<-----<---<--<-<<>>->-->--->----->-------->---------.
 
,---------<--------<-----<---<--<-<<>>->-->--->----->-------->---------.
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|                  /  ""--__                                          |
 
|                  /  ""--__                                          |
 
|                ./    +    ""--__                                    |
 
|                ./    +    ""--__                                    |
|              ./  M0OKE    __.:::--+ 2E0TPS                        |
+
|              ./  M0OKE    __.:::--+ M0XPX                          |
 
|            /        +--"""                                        |
 
|            /        +--"""                                        |
 
|          ./      _-" 2E0RLZ                                        |
 
|          ./      _-" 2E0RLZ                                        |
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                   ---===( LINK OF THE MONTH )===---
 
                   ---===( LINK OF THE MONTH )===---
  
https://www.rawles.net/radio/packet/neda/  -  By 1994, the North East
+
http://aprs.mountainlake.k12.mn.us/  -  Several members have reported
Digital Association (NEDA) had "promoted into existence the  Western
+
hearing calls or  seeing APRS packets from a long way away, even across
Hemisphere's largest  Amateur Radio  packet network". Their Annual from
+
the Channel,  on their radios while hillwalking lately. This is likely
the same year serves as a record of what they needed to know to get to
+
due to tropospheric ducting, the result of climatic conditions causing
that point and as a reference for us today. By  kind permission of Tadd
+
temperature inversions, which in turn cause a higher refractive index in
Torborg KA2DEW.
+
the atmosphere, 'bending' the signalUsing data from APRS-IS (in other
 +
words, packet  stations), this site presents a world map showing radio
 +
propagation from stations  operating near 144MHz from the last hour. It
 +
might surprise you how often and how far propagation is reported at this
 +
time of year.
  
https://youtu.be/7ea8SwhrhMU -  As a  bonus link, Tadd's  Triangle Linux
 
Users  Group hour-long  talk  about  TARPN, "TARPN:  Off  the Grid  Text
 
Messaging", covers a lot of information about the network.
 
  
 +
                    ---===( CONTRIBUTIONS )===---
  
                    ---===( CONTRIBUTIONS )===---
+
If you  have any contributions  for the September 2018  bulletin, please
 +
send them  via mail (internet or  packet) to the addresses  shown at the
 +
top of this message.
  
If you have any contributions for  the August 2018 bulletin, please send
 
them via mail (internet or packet) to  the addresses shown at the top of
 
this message.
 
  
 
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[end]
 
[end]
 
</pre>
 
</pre>

Revision as of 17:41, 1 August 2018

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   _____
   \ | /    L O N D O N   H A C K S P A C E           August 2018 update
    \|/     P A C K E T   R A D I O                        to HACKRS@GBR
     |      ____________________________________________________________
  .-"""-.
 /    \\ \      We are working together to build and maintain an amateur
| \\,='\\ |     radio packet network in and around London, UK.
 \ \\    /
  '-...-'                               Internet email: packet@m0hsl.org
   __|__                          AX25 email: HACKRS@GB7CIP.#32.GBR.EURO
    ===                     Internet IRC: #lhs-radio on irc.freenode.net
     =    https://wiki.london.hackspace.org.uk/view/Project:Packet_Radio

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   ---===( NEXT MEETING: THURSDAY 13 SEPTEMBER 2018 AT 18:00 )===---

It looks  likely that  this will  be the  last hilltop  get-together, at
least  for 2018.  As  usual,  we'll meet  by  the  Royal Observatory  in
Greenwich,  nearish the  clock. Everyone  is welcome  - look  for bikes,
antennas,  that sort  of  thing.  If you  get  lost,  someone should  be
listening  out  on  433.500MHz.  We  even  have  an  object  on  APRS  -
https://aprs.fi/info/a/HACKRS -  look for  HACKRS. Being  September, the
meeting will likely be a bit darker and damper than usual. It might even
rain, so check the wiki page (URL  in the header) to check whether we've
decided to go to a pub instead.

=> Note the earlier time of 18:00; this is to allow for the fact that <=
=> the van to throw us out of the park appears at 20:00 in September! <=

An amateur-to-be, George, came along to our last meeting and we told him
a bit about  what radio is all  about. Others stopped to ask  what it is
we're doing or just to let us know  that they are into radio too. On the
table, Mat and Sam were testing out a couple of antennas for packet, one
on a bike-mounted pole and one on a cord slung over a nearby tree.


                     ---===( HACKSPACE NEWS )===---

The hackspace  is returning, thanks to  a band of helpers.  Regular open
evenings have started again on Tuesdays at 7pm, the network is going in,
and work areas  are being installed. The more members  who can help, the
faster the space will be open. Get in touch if you can help!


                  ---===( TWO MEMBERS LEVEL UP )===---

Mat 2E0TPS is now M0XPX and Michael 2E0KRV is now M0ISR! In other words,
both have achieved full licence status. Congratulations to both of them!


                      ---===( NETWORK MAP )===---

The network map shows the users  interested in connecting via packet and
the success with which they  have reported establishing connections. The
maps remain  unchanged from  last month,  though there  was a  flurry of
interest in packet on the mailing list.

,----------------------------------------------------------------------.
|                      GB7NWG       __..--+ M0IPU                      |
|                     (M0SKF) o--"""                                   |
|                             |\_                                      |
|                      M0OKE .'+ \                                     |
|                            |    )+ M0XPX                             |
|                           .' +-" 2E0RLZ                              |
|                           |  |                                       |
|                          .' |                                        |
<-- M0PLL                  | .'                                        |
|                         .' |                                         |
|                         |.|                                          |
|                        .'|                      +  packet station    |
|                        |.'                      o  repeater or node  |
|                GB7CIP  ||                      --- reliable link     |
|                (G4APL) o                       ... occasional link   |
`----------------------------------------------------------------------'

Because this is pretty narrow, here is a stretched version:

,---------<--------<-----<---<--<-<<>>->-->--->----->-------->---------.
|                GB7NWG                                                |
|               (M0SKF)               ________........--------+ M0IPU  |
|                   .o_-------""""""""                                 |
|                  /   ""--__                                          |
|                ./    +     ""--__                                    |
|              ./   M0OKE     __.:::--+ M0XPX                          |
|             /         +--"""                                         |
|           ./       _-" 2E0RLZ                                        |
|         ./      _-"                                                  |
|       ./     _-"                                                     |
|      /    _-"                                                        |
|    ./  _-"                                      +  packet station    |
|   / _-"                                         o  repeater or node  |
|  o-" GB7CIP                                    --- reliable link     |
|      (G4APL)                                   ... occasional link   |
`---------<--------<-----<---<--<-<<>>->-->--->----->-------->---------'


                   ---===( LINK OF THE MONTH )===---

http://aprs.mountainlake.k12.mn.us/  -  Several  members  have  reported
hearing calls or  seeing APRS packets from a long  way away, even across
the Channel,  on their radios  while hillwalking lately. This  is likely
due to tropospheric  ducting, the result of  climatic conditions causing
temperature inversions, which in turn cause a higher refractive index in
the atmosphere, 'bending' the signal.  Using data from APRS-IS (in other
words, packet  stations), this site  presents a world map  showing radio
propagation from stations  operating near 144MHz from the  last hour. It
might surprise you how often and how far propagation is reported at this
time of year.


                     ---===( CONTRIBUTIONS )===---

If you  have any contributions  for the September 2018  bulletin, please
send them  via mail (internet or  packet) to the addresses  shown at the
top of this message.


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