| |
ZL3AI > APRDIG 27.10.06 05:37l 272 Lines 9611 Bytes #999 (0) @ WW
BID : 8891-ZL3AI
Read: GUEST
Subj: [APRSSIG] Vol 28 #11, 1/4
Path: DB0FHN<DB0FOR<DB0MRW<DK0WUE<SP7MGD<CE8FGC<ZL2BAU
Sent: 061027/0421Z @:ZL2BAU.#87.NZL.OC #:11504 [Waimate] $:8891-ZL3AI
From: ZL3AI@ZL2BAU.#87.NZL.OC
To : APRDIG@WW
Today's Topics:
1. RE: Low band APRS (was Re: 9600b UHF APRS IS THE FUTURE OF APRS)
(Robert Bruninga)
2. RE: Low band APRS (was Re: 9600b UHF APRS IS THE FUTURE OF APRS)
(scott_at_opentrac.org)
3. Re: Maxon data radios (Jan T. Pharo)
4. Who had the Garmin or Deluo Serial GPS (Rich Mazzeo)
5. RE: 9600b UHF APRS IS THE FUTURE OF APRS (Doug Ferrell)
6. Re: Low band APRS (was Re: 9600b UHF APRS IS THE FUTURE OF APRS)
(Ben Jackson)
7. RE: [SPAM] [aprssig] Who had the Garmin or Deluo Serial GPS (Heaton, Brad)
8. RE: [SPAM] [aprssig] Who had the Garmin or Deluo Serial GPS
(scott_at_opentrac.org)
9. Some APRS and other ideas... (Robert Bruninga)
10. RE: Low band APRS (was Re: 9600b UHF APRS IS THE FUTURE OF APRS)
(Robert Bruninga)
11. Help with DSL Modem (Mark Fellhauer)
12. Re: Help with DSL Modem (Brady Small)
13. Re: Help with DSL Modem (Joel Maslak)
14. Re: Help with DSL Modem (Drew Baxter)
15. Re: Help with DSL Modem (Jim Duncan)
16. Jim Duncan, KU0G (John Becker)
17. MX614 (scott_at_opentrac.org)
18. Re: Marathon support with APRS (Mark Earle)
19. Re: Jim Duncan, KU0G (Jim Duncan)
20. Re: Help with DSL Modem (Gregg Wonderly)
21. Re: Help with DSL Modem (A.J. Farmer (AJ3U))
22. Re: Low band APRS (was Re: 9600b UHF APRS IS THE FUTURE OF APRS)
(A.J. Farmer (AJ3U))
23. Re: Mic-E STATUS refresh and bad software? (kb2scs_at_optonline.net)
24. Re: Help with DSL Modem (Mark Fellhauer)
25. Gas Balloons using K5GAS callsigns (John Habbinga)
26. Re: Gas Balloons using K5GAS callsigns (John Habbinga)
27. Re: Gas Balloons using K5GAS callsigns (John Habbinga)
28. Re: Gas Balloons using K5GAS callsigns (John Habbinga)
29. RE: Re: Gas Balloons using K5GAS callsigns (tvsjr)
30. Re: Maxon data radios (Ian ZL1VFO)
31. AGWTracker update ((SV2AGW)George Rossopoulos)
32. Re: Marathon support with APRS (William McKeehan)
33. Re: Marathon support with APRS (William McKeehan)
34. Re: Re: Gas Balloons using K5GAS callsigns (John Habbinga)
35. RE: Re: Gas Balloons using K5GAS callsigns (Cap Pennell)
36. RE: Re: Gas Balloons using K5GAS callsigns (w2kb_at_comcast.net)
----------------------------------------------------------------------
Message: 1
Date: Tue, 10 Oct 2006 13:59:05 -0400
From: "Robert Bruninga" <bruninga_at_usna.edu>
Subject: RE: [aprssig] Low band APRS (was Re: 9600b UHF APRS IS THE
FUTURE OF APRS)
>>My pet peeve is that there is no 10 meter
>>FM 1200 BPS packet frequency. For rural areas *that*
>>is the ticket with plenty of surplus hi power "low band"
>>commercial stuff available.
I used to think that as well, but I finally got a 10m rig and put it in the
car and then put a beaocn on the roof at work into a 5/8 wave vertical on a
metal roof. I was absolutely astonished when I drove home that the range
was LESS than 2 meters!
Maybe I was doing something wrong, but I gave up. It wanst worth it. And
I was using SSB mode and not FM (I actually wanst trying to decode
packets, just see how far I could HEAR it. And the range was so miserable
compared to 2m, that I never persued it..
I think the reason the Highway Patrol gets good range at 30 MHz is because
they have really tall antenna towers and can put several vertical elements
to give them some gain at 30 MHz. Then they are also not in an urban
environment but the open road.
But if anyone can prove me wrong here, I woiuld love to find a way to use
the 10m band. But NOT FM. There are not enough FM channels on the 10m
band to be able to afford one for APRS, (I don't think) I may be wrong
there too, but during the good sunspot cycle, I bet and APRS channel would
be useless and opposed by most.
De WB4APR, Bob
------------------------------
Message: 2
Date: Tue, 10 Oct 2006 11:10:36 -0700
From: <scott_at_opentrac.org>
Subject: RE: [aprssig] Low band APRS (was Re: 9600b UHF APRS IS THE
FUTURE OF APRS)
>astonished when I drove home that the range was LESS than 2 meters!
Man... my IGate antenna is like 6 meters off the ground, so I'd be out of
range before I left the driveway! =]
Scott
N1VG
------------------------------
Message: 3
Date: Tue, 10 Oct 2006 21:07:19 +0200
From: "Jan T. Pharo" <la2bba_at_jpharo.net>
Subject: Re: [aprssig] Maxon data radios
"Andrew Rich" <vk4tec_at_tech-software.net>, Tue, 10 Oct 2006 17:08:43
+1000:
>What like this ?
>
>145.175 MHz
It's the uplink frequency for a repeater channel (R8 after the old time
counting, now RV something).
--
73 de Jan, LA2BBA
Hvaler, Norway
------------------------------
Message: 4
Date: Tue, 10 Oct 2006 15:16:05 -0400
From: "Rich Mazzeo" <forummail_at_richmazz.com>
Subject: [aprssig] Who had the Garmin or Deluo Serial GPS
Sorry to go off topic, a few months back someone posted up a Garmin or
Deluo hockey-puck style GPS that was 12v and output serial data at a decent
price. If anyone remembers the link please reply off-sig, thanks!
--
Rich
N3XKU
------------------------------
Message: 5
Date: Tue, 10 Oct 2006 15:19:39 -0400 (EDT)
From: Doug Ferrell <kd4moj_at_kd4moj.org>
Subject: RE: [aprssig] 9600b UHF APRS IS THE FUTURE OF APRS
On Tue, 10 Oct 2006, Andrew Rich wrote:
>I have found it !
>
>The best way to get out on aprs
>
>http://tech-software.net/viewtopic.php?t=78
Looks like my vehicle!
--
...DOUG
KD4MOJ
------------------------------
Message: 6
Date: Tue, 10 Oct 2006 12:53:22 -0700
From: Ben Jackson <ben_at_ben.com>
Subject: Re: [aprssig] Low band APRS (was Re: 9600b UHF APRS IS THE
FUTURE OF APRS)
On Tue, Oct 10, 2006 at 01:59:05PM -0400, Robert Bruninga wrote:
>
>I used to think that as well, but I finally got a 10m rig and
>put it in the car and then put a beaocn on the roof at work into
>a 5/8 wave vertical on a metal roof. I was absolutely
>astonished when I drove home that the range was LESS than 2
>meters!
I was working on a simple 30m beacon (see some earlier messages on this
list) and when it worked the range was great, but the band only opened up
for me a few times a day, at least at 5 watts. It also required a good
antenna.
What I wanted to do with it was up the power a bit and make use it in an
ocean buoy, but given the reduced efficiency I was going to get from a
short vertical, and the relative lack of 30m gates, I figured it would not
be very effective.
>But if anyone can prove me wrong here, I woiuld love to find a
>way to use the 10m band. But NOT FM. There are not enough FM
>channels on the 10m band to be able to afford one for APRS,
One thing that quickly became clear on 30m was that 200Hz SSB tone spacing
requires a very precise oscillator. For unattended APRS operation at 30m
you're talking 1 or 2ppm accuracy. At 10m you'd have to do even better.
It almost requires a GPS source that provides some kind of time discipline
you can use with the transmitter.
--
Ben Jackson AD7GD
http://www.ben.com/
------------------------------
Message: 7
Date: Tue, 10 Oct 2006 16:12:43 -0400
From: "Heaton, Brad" <Brad.Heaton_at_il.proquest.com>
Subject: RE: [SPAM] [aprssig] Who had the Garmin or Deluo Serial GPS
Look at
https://www.argentdata.com/catalog/index.php?cPath=23&osCsid=g19u9o311bb
raj1bh4hcqg3fn5
Deluo and Garmin headless GPS units. As pictured they are 5v but there
are some adapters available or you can make your own.
-Brad
>Sorry to go off topic, a few months back someone posted up a Garmin
>or Deluo hockey-puck style GPS that was 12v and output serial data at a
>decent price. If anyone remembers the link please reply off-sig,
>thanks!
--
Rich
N3XKU
------------------------------
[commercial content deleted]
------------------------------
Message: 9
Date: Tue, 10 Oct 2006 17:04:47 -0400
From: "Robert Bruninga" <bruninga_at_usna.edu>
Subject: [aprssig] Some APRS and other ideas...
While I was at the amsat conference, these ideas came to mind. Just some
challenges for fun... Here are a few that got me thinking:
See the WEB page:
http://www.ew.usna.edu/~bruninga/amsat-ideas.html
1) APRS $15 Student Receiver Kit. How about a simple up converter to
upconvert 144.39 up to 462.5625 MHz for the FRS radios that the kids
already have. I'm sure we could do this for really cheap since the kids
already have the radio... A little device that wraps around the FRS
antenna and has its own 19" antenna. See pictures on the WEB page above.
2) Golf Ball Satellite Idea: A few years ago, there was a golf ball
company willing to pay 100's of thousands to get a golf ball into space as
an AD campaign. We all know the similar SWATCH project was soundly killed
by the amateur community because it was in direct violation of the rules.
But, such use of someone else's money to BUILD a satellite *can* be done if
it is done within the rules. So here is my design challenge to the
amateur commuunity for a golf ball 10m to 2m linear satellite transponder
for MULTI-USER PSK-31. See:
3) The big-ear "S"band dish for local operations. I posted this before and
it is simply using a 1/4th quadrant of an old "C" band TV dish as a nice
gain antenna. In fact, save this for all future AMSAT EAGLE microwave
links. These dishes are good to Ku band and using only 1/4th of them is
much more manageable and easier to mount. And you only lose 12 dB from the
38 dB gain of a full sized one. Thats a nice 26 dB gain antenna that
people are throwing away. Oh, and if you find a big dish that is intact,
then you get four of these Quardrant antennas for one. And disassembling it
into quadrants makes it easier to drag home anyway...
Anyway, just some fun thoughts...
de Wb4APR, Bob
------------------------------
Read previous mail | Read next mail
| |
