| |
ZL3AI > APRDIG 20.12.03 09:29l 215 Lines 9063 Bytes #999 (0) @ WW
BID : 2522-ZL3AI
Read: GUEST
Subj: TAPR Digest, Dec 17, 3/4
Path: DB0FHN<DB0RGB<DB0MRW<OK0PKL<OK0PPL<DB0RES<ON0AR<ON0AR<WB0TAX<VK3AVE<
VK7AX<ZL2BAU<ZL2BAU<ZL3VML
Sent: 031220/0705Z @:ZL3VML.#80.NZL.OC #:14977 [Chch-NZ] FBB7.00i $:2522-ZL3AI
From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
Subject: Re: Weather warning
From: David VanHorn <dvanhorn@cedar.net>
Date: Wed, 17 Dec 2003 13:55:49 -0500
X-Message-Number: 15
At 06:42 PM 12/17/2003 +0000, dale huguley wrote:
>Scott Miller wrote:
>
>>UNUSUALLY HOT WEATHER HAS ENTERED THE REGION FOR DECEMBER...AS THE
>>EARTH HAS LEFT ITS ORBIT AND IS HURLING TOWARD THE SUN.
>>
>>
>Interesting side note - as told to me by Clyde Tombaugh - discoverer of
>Pluto-
>It takes more energy to go toward the Sun than away from it if you start
>from the earth.
You have to get rid of a bunch of energy somehow. A big collision works, or
a close encounter with a small black hole, or a big booster that fires
forward in the orbit.
----------------------------------------------------------------------
Subject: Re: Weather warning
From: "Curt, WE7U" <archer@eskimo.com>
Date: Wed, 17 Dec 2003 10:57:52 -0800 (PST)
X-Message-Number: 16
Then there's another SciFi author: Arthur C. Clarke. Invented the
geostationary satellite belt, or "Clarke Belt". Anybody who enjoys
modern communication should appreciate that little invention!
-----------------------------------------------------------------
Curt, WE7U archer@eskimo.com
Arlington, WA, USA http://www.eskimo.com/~archer
"Lotto: A tax on people who are bad at math." -- unknown
"Windows: Microsoft's tax on computer illiterates." -- WE7U
"The world DOES revolve around me: I picked the coordinate system!"
----------------------------------------------------------------------
Subject: RE: Weather warning
From: "Bob Powers" <powersb@opencominc.com>
Date: Wed, 17 Dec 2003 13:01:14 -0600
X-Message-Number: 17
Yep, it looks like at least some of the automated systems grabed it. It's
listed at Weather Underground http://www.wunderground.com/severe.asp
I bet you that guy is embarrased.
----------------------------------------------------------------------
Subject: Re: Holiday Traveling = 144.39 CTCSS 100
From: WA8LMF2@aol.com
Date: Wed, 17 Dec 2003 15:13:57 EST
X-Message-Number: 18
In a message dated 12/17/2003 4:32:42 AM Pacific Standard Time,
aprssig@almostanywhere.com writes:
>Will the voice alert work with a Kenwood TM-V7A where the TNC (or
>TinyTrak) is connected to the TNC port?
>I am taking a trip to D.C. over the holidays and will be in my wife's
>van (V7A equipped) instead of my truck (D700 equipped).
>
>Bruce, KQ4TV
It depends which RX pin of the the 6-pin MIniDin you have connected the TNC
RX to.
The so-called "9600 Baud RX" pin is actually raw, unsquelched,
un-deemphasized audio directly off the RX discriminator. RX audio will
always be present here regardless of squelch or PL settings.
The so-called "1200 Baud RX" is squelched, de-emphasized RX audio the same
as speaker audio but at a fixed level unaffected by the volume control. In
most radios, this output will also be affected by PL squelch if it is in
use.
Full details on the MiniDIN 6-pin "DATA" connector follow. This is a reprint
of a post I have made many times on various groups and mailing lists about
this issue.....
====== PASTE ========
The 6-Pin MiniDIN "DATA" or "PACKET" connector is an industry standard
adopted by all the Japanese ham mfrs. It is now superseding the various
proprietary 7, 8 and 13-pin full-sized DIN connectors used by various
manufacturers. The contacts on this connector provide access to:
1) TWO kinds of receive audio:
Raw non-deemphasized discriminator output sometimes labeled "9600 Baud
Receive".
De-emphasized squelched audio similar to what come out the speaker, but
at a fixed level unaffected by the volume control. It is sometimes labled "1200
Baud Receive" or "RXD".
On multi-mode radios (Yaesu FT-817, Yaesu FT-100, Icom 706, etc), only
the "1200 baud" output will be live on AM, SSB or CW since the 9600 baud output
is associated only with the discriminator of FM receivers.
2) TX audio input (sometimes misleadingly labeled "TX Data Input" or "TXD")
In some radios, a menu setting for "1200" vs "9600" baud will determine if
this input goes either into the same channel as the mic input (but at a higher
audio level) for 1200 baud packet, SSTV, EchoLink, AFSK RTTY, etc, or is
DC-coupled directly into the TX modulator (for 9600 baud packet).
3) TX PTT (confusingly labeled "Standby" by Kenwood) -- normal
ground-to-transmit line just like most mic inputs.
4) Receiver Squelch status line (normally no sig-squelch-closed = 0V, signal
active-squelch open = 5V). Sometimes labled "COR" (Carrier Operated Relay -
an archaic term from the early days of FM repeaters), "COS" (Carrier Operated
Switch), "RX", "CD" (Carrier Detect), "Activity" or "Busy".
5) Common/Ground.
Note that despite the misleading labels referring to data input and output,
the jack only carries AUDIO, AUDIO, AUDIO! THERE IS NO ACTUAL RXD or TXD
DATA in the sense of RS-232 or TTL-level streams of 1s and 0s anywhere on
this connector!!!
This connector is the perfect point to connect packet TNCs, soundcard
interfaces, phone patches, IRLP/EchoLink controllers, APRS trackers, paging
encoders, or any other device that needs access to the transmit and receive
audio of a radio.
These audio inputs and outputs are high-level (100-300mV), similar to home
stereo "LINE" input level seen at RCA jacks on tuners, amps, tape decks,
etc, rather the the 5-10mV level seen at most mic input jacks.
NOTE that this means that you have to set the audio output
("TRANSMIT") level of sound card interfaces, TNCs, data controllers, APRS
trackers, etc to a MUCH HIGHER LEVEL than you would for a normal connection
into the mic jack. With some devices you will have to shift internal
jumpers, or exercise software menu commands to increase output level
(recent Kantronics TNCs for example).
On most radios with this port, grounding the DIN-6 PTT line mutes the front
panel mic input to prevent extraneous shack noises from getting mixed with
whatever you feed into the transmit audio input.
You can connect a TinyTrak here very effectively if you:
1) Change R5 (220K resistor) on the TT to about 27-33K to boost the TX audio
level from mic level to line level.
2) Connect the direct DC-coupled "CARRIER DET" line of the TT to the
MiniDIN "SQUELCH" or "COR" line.
An annotated pinout diagram of this connector, useful as a worksheet for
making up cables, is on my website at:
http://members.aol.com/wa8lmf/miscinfo
Click through the link on this page which will take you to a directory of
assorted downloadable files, not a web page. Look for the file
MiniDIN6-Packet.pdf
Note that this connector is exactly the same one used on PS/2 keyboard and
mouse cables. A PS/2 keyboard extension cable is an excellent source of a
plug and cable assembly to mate with the jack on the radio. [at a fraction
of the cost of the optional Kenwood or Yaesu cable assemblies! ] Cut the
female end off, strip the bare end and connect the bare leads to the
appropriate pins of whatever mates with your tracker, TNC, or soundcard
interface.
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
----------------------------------------------------------------------
[commercial content deleted]
----------------------------------------------------------------------
Subject: Help: KPC3+ Schematic or PTT transistor #
From: Richard Garcia <k4gps@bellsouth.net>
Date: 17 Dec 2003 21:55:47 -0500
X-Message-Number: 21
Help!!! I was wiring up my KPC3+ today to a Motorola and for the first
time decided to power it off of the DB9 connector. Something went
terribly wrong and I was smelling something awful. It appears that the
jumpers in the KPC3 which select what port to take b+ off of and also if
it is for reset or powering was set incorrectly. B+ was set to Pin#7 and
that is correct I know and I double checked the pin so I know it is in
the right place so the only thing I can think of is the darn jumper!
Anyway If I key the radio with the Mic and then send a packet it works
so I have it isolated to the PTT transistor (I hope) I have no schematic
and the on-line manual is VERY poor no schematic and also no mention of
wiring for HSP!! you would think they would have updated it by now. I
know it is Pin 2 but still many others may have no idea about the KPC3+
and built in HSP, they still talk about the adapter cable in the on-line
manual.
Has anyone ever replaced the PTT transistor ?? Is it PNP or NPN will a
good old 2N2222 do it ? There are 3 transistors in a row, don't know
which one Q1 2 or 3. It would be very helpful if someone would be able
to let me know which one. I am leaving on a trip Friday AM and have very
little time to get it fixed!
Rich
----------------------------------------------------------------------
Read previous mail | Read next mail
| |
