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ZL3AI > APRDIG 02.04.03 10:42l 231 Lines 9174 Bytes #999 (0) @ WW
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To : APRDIG@WW
TAPR APRS Special Interest Group Digest for Tuesday, March 25, 2003.
1. PTT/VOX for AGWPE - PSK31
2. Re: Radiation monitoring and APRS
3. Re: PTT/VOX for AGWPE - PSK31
4. Cable to Connect PK232MBX and Data port on Kenwood TS-440S
5. RE: Cable to Connect PK232MBX and Data port on Kenwood TS-440S
6. LEO Satellite Status
7. Re: PTT/VOX for AGWPE - PSK31
8. Re: Radiation monitoring and APRS
9. Re: Radiation monitoring and APRS
10. pretty combination of APRS and GIS
11. Re: PTT/VOX for AGWPE - PSK31
12. Re: Radiation monitoring and APRS
13. Re: PTT/VOX for AGWPE - PSK31
14. Re: [ui-view] Cable to Connect PK232MBX and Data port on Kenwood TS-440S
15. Xastir, now with topo support on Windows
16. Frame decoding help
17. Raw GPS data
18. Re: Frame decoding help
19. Re: Raw GPS data
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Subject: PTT/VOX for AGWPE - PSK31
From: "Joe Della Barba" <joe@dellabarba.com>
Date: Tue, 25 Mar 2003 04:40:05 -0500
X-Message-Number: 1
I just got a laptop for my boat. I am planning on using it for VHF APRS
sometimes, HF APRS sometines, and PSK31. I have a TS-440 for HF work. My
question is this; Should I use serial port PTT keying, the VOX circuit in
the radio, or an outboard VOX unit like the SignaLink?
Thanks,
73 De N3HGB
Joe
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Subject: Re: Radiation monitoring and APRS
From: "Laurie - g6isy" <g6isy@dsl.pipex.com>
Date: Tue, 25 Mar 2003 10:50:29 -0000
X-Message-Number: 2
psschwarz@kellnet.com wrote:
>Steve Jones writes:
>
>>Isn't the Sievert an SI unit?
>
>Scouring through my books didn't produce Sievert being an SI unit,
>but I won't discount it.
>
The Sievert is the SI unit for equivalent dose.
http://physics.nist.gov/cuu/Units/units.html
http://www.ki.se/onkpat/radfys/Sievert.html
73 Laurie - G6ISY
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Subject: Re: PTT/VOX for AGWPE - PSK31
From: "Germino" <mgermino@inreach.com>
Date: Tue, 25 Mar 2003 05:50:09 -0800
X-Message-Number: 3
I have not tried VOX with PSK31, but as I understand it, any of the computer
sounds, not just the PSK tones will be transmitted. If you run different
programs at the same time, you would be keying the VOX often.
Mike
AD6AA
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Subject: Cable to Connect PK232MBX and Data port on Kenwood TS-440S
From: <christensene@mebtel.net>
Date: Tue, 25 Mar 2003 14:16:13 -0000 (GMT)
X-Message-Number: 4
I'm looking for anyone or a company that might have a cable to go
from a PK232MBX modem to the AFSK port on the back of the Kenwood
TS-440S(AT). I used to have one, but I lost it and I don't really
have that much hair to pull out to make it again!
73s,
Eric KF4OTN
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Subject: RE: Cable to Connect PK232MBX and Data port on Kenwood TS-440S
From: "Matthew Stennett" <wa4tkg@iwon.com>
Date: Tue, 25 Mar 2003 09:45:47 -0500 (EST)
X-Message-Number: 5
How did you have it wired before? I found the most USEFUL connector on a
transceiver is of course, the ACCESSORY. Wire EVERTHING/ANYTHING into it.
Is that how you had it set up, or through the FRONT microphone connector ?
Have one of the REAR PANEL connectors?
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Subject: LEO Satellite Status
From: Bob Bruninga <bruninga@usna.edu>
Date: Tue, 25 Mar 2003 10:09:16 -0500 (EST)
X-Message-Number: 6
PCSAT is still going strong. pcsat.aprs.org shows 64+ stations used the
bird in the last 24 hours. During last USA pass I saw 20 users and 23
messages. PCsat is in full eclipse periods but is being kept in low power
mode through the dilligence of the many round-the-world command stations.
Anyone with a 1200 baud FM packet station can use PCSAT as a digipeater on
145.825 MHz. Passes over the mid northern latitudes are mid mornings.
Mobile/FM Satellite Pass Periods for the week of 03-25-2003
Sats 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 00 01 02 03
---- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
AO27 ********** ***********
UO14 ********** ***********
SO41 ************ ************
ISS ***************************** *
UO22 **** ***********
PCsat ************** ****************
AO-7 ***** ** ******* ******* ** *****
Note: Times are LOCAL SUN TIME for MID Northern Latitudes.
Morning passes mean she has just entered the sun and is low on power. She
came up with batteries at 15.3 volts (having been in the sun only 10
minutes), but the 20 user load took her down to 14.6v (1.2 volts per
cell), but she was back up to 15.1 towards the end of the pass (and 20
mins in the sun)...
SOUTHERN Hemisphere pass times:
Sats 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 00 01 02 03
---- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
AO27 ******** ***********
UO14 *********** ***********
SO41 * ************ *****
ISS *************************** *
UO22 ********** ***
PCsat ************** **************
AO-7 * ********** *********** **
Note: Times are LOCAL SUN TIME for MID Southern Latitudes.
de WB4APR@amsat.org, Bob
PCsat WEB page http://www.ew.usna.edu/~bruninga/pcsat.html
ISS-APRS FAQ: http://www.ew.usna.edu/~bruninga/iss-faq.html
CUBESAT Designs http://www.ew.usna.edu/~bruninga/cubesat.html
APRS LIVE pages http://www.ew.usna.edu/~bruninga/aprs.html
APRS SATELLITES http://www.ew.usna.edu/~bruninga/astars.html
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Subject: Re: PTT/VOX for AGWPE - PSK31
From: "Ramon F. Kolb" <ramon@ieee.org>
Date: Tue, 25 Mar 2003 11:17:37 -0500
X-Message-Number: 7
I have used PSK31 and other soundcard-based solutions in the past, and
these are my experiences:
1. Often, the soundcard provides *some* feedback to the speaker while
receiving, making the vox engage
2. Buy a cheap, second soundcard for your PC. Any of the newer PCs
running Win98 or later can handle the. I've seen cheap ones that work
($15-$20), and really cheap ones that work (like the $3.99 one that was
on sale in xxxxxxxxxxx the other day). Some have a little problem with
calibration of the output tone frequency, but most PSK31 programs have
ways to adjust for it. This will allow you do leave your Windows sounds
on and audible, and allow you to make a "permanent" setup so you don't
have to change cables all the time.
3. Don't use VOX. It's not reliable, not sustainable in the long run.
Never use VOX if you plan to run the station unattended, especially if
you're using FM for transmission mode.
4. Use your serial port for PTT control if you can. (i.e., if you have a
spare port available). The use of USB-to-Serial dongles and adapters has
had mixed results: some work and some don't. Most of the time, the PSK31
program will write directly to the port to set the DTR or some other
signalling line to "high" to transmit, and this may or may not be
possible with a dongle. However, you can move your packet TNC to the
usb-serial dongle, and thus freeing up a "real" port.
5. Building your PTT line is a matter of a small investment (a 9-pin
sub-D connector and some thin, 2-conductor or 1+ground-conductor wire,
and about 5 minutes soldering work to hook the thing up to your existing
microphone plug. "modern" transceivers may need a modular connector,
but also that's not supposed to break the bank.
6. If you can, especially if you are active on HF with substantial (>50
Watts) output power, think about getting an optical isolator for your
computer-radio connection. RF feedback on the audio lines sometimes
burns out soundcards, in my experience. I've used a Buxcomm Rascal
separator for about 2 years with great success, which I bought after
burning out a soundcard...
As for AGWPE, the same arguments are valid for using AGWPE's soundcard
interface as the ones I used for PSK31 above.
-Ramon
Ramon F. Kolb, KX1T, PA3EUG, Boston, MA, USA [FN42KI]
ICQ:77117744; MSNMGR:legalalien30@hotmail.com
http://kx1t.webhop.org
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Subject: Re: Radiation monitoring and APRS
From: psschwarz@kellnet.com
Date: Tue, 25 Mar 2003 16:54:47 GMT
X-Message-Number: 8
Thanks Laurie and Steve for the info on Sievert. Same as a gray.
And, Steve, you are correct. I found the range of an alpha particle as a few
cm in air and stand corrected. I didn't want to dispute the issue, and
misinterpreted the energy associated with the particle giving it a greater
range than is true.
Anyway, using APRS to report radiation levels is a neat idea.
Patrick...KB8RTZ...
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