| |
ZL3AI > APRDIG 17.02.04 14:13l 68 Lines 2524 Bytes #999 (0) @ WW
BID : 2856-ZL3AI
Read: GUEST
Subj: TAPR Digest, Feb 15, 4/4
Path: DB0FHN<DB0RGB<OK0PPL<DB0RES<ON0BEL<GB7FCR<ZL2TZE<ZL3VML
Sent: 040217/1107Z @:ZL3VML.#80.NZL.OC #:19317 [Chch-NZ] FBB7.00i $:2856-ZL3AI
From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
Subject: Re: New option for HF 30M APRS -- TinyTrak 3b (Review)
From: "Stephen H. Smith" <WA8LMF2@aol.com>
Date: Sun, 15 Feb 2004 18:14:34 -0800
X-Message-Number: 20
Robert Bruninga wrote on 2/15/2004, 9:29 AM:
>Rememeber, it only take 5 transistors to make a FSK
>100 Watt HF transmitter and it needs NO heatsink
>because the 100W dutycycle is less than 1%. This
>can fit a relatively tiny box.
>
>And it only needs to be on 10.149.3 MHz, and no
>tuning required. Thus, a blackbox, go anywhere
>in-the-world tracker...
>
>This is great news... Now, who has the time to build
>the Transmitter?
It's essentially already been done. Bear in mind that the TinyTrak
outputs AFSK (audio tones) ready to go into the mic jack of an SSB
transmitter, not TTL levels to go into a direct FSK system. What you need
is a very simple basic SSB transceiver for 30M.
Small Wonder Labs
http://www.smallwonderlabs.com/
[ Click the tab for "PSK31 in the left-hand frame. ]
makes a series of small single-band PSK31 transceivers that are available
in 40, 30, and 20 meter models. These are actually crystal-controlled
single-frequency SSB transceivers intended to be hooked up to the audio
input and output of a computer sound card for PSK31 operation. All tuning
is done at audio with the PSK31 audio spectrum display.
The thirty-meter version could have a TinyTrak 3b in HF mode connected to
it instead. I have actually been considering using one of these devices
as an HF APRS igate receiver because of it's ultralow power consumption.
One would crystal the unit for 10.147.60 (since PSK devices and
applications normally operate in USB so that on the audio spectrum
displays, a higher audio frequency corresponds to a higher RF frequency).
Stephen H. Smith wa8lmf (at) aol.com
Home Page: http://wa8lmf.com
Ham Radio/Mobile SSTV page: http://members.aol.com/wa8lmf/ham
APRS Stuff
http://members.aol.com/wa8lmf/aprs
----------------------------------------------------------------------
Subject: Oncore UT
From: Reid Crowe <bigreidous@sbcglobal.net>
Date: Sun, 15 Feb 2004 19:04:50 -0800 (PST)
X-Message-Number: 21
I need help finding software that will make changes on the Motorola Oncore
UT GPS. Does anyone know of any? I tried winoncore12 but couldn't get the
Gps to communicate with the computer. I'm also using Taprs interface
board. Any suggestions?
73 Reid KC=D8IDI
---
END OF DIGEST
Read previous mail | Read next mail
| |
