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ZL3AI > APRDIG 02.04.04 18:28l 305 Lines 10339 Bytes #999 (0) @ WW
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From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
Subject: RE: [despammed] RE: Kenwood TM-D700A as a DIGI?
From: "Christensen, Eric" <CHRISTENSENE@MAIL.ECU.EDU>
Date: Tue, 30 Mar 2004 19:23:42 -0500
X-Message-Number: 26
Dave,
I am using the TM-261A for a digipeater/weather station radio... I haven't
had any problems with it at all. Check out eBay for a TNC2 modem. I hear
they are cheap (<$100) so take a look. I'll probably be looking for some
too.
73s,
Eric KF4OTN
-----Original Message-----
From: Dave Land KD5FX [mailto:kd5fx@cableone.net]
Sent: Tuesday, March 30, 2004 19:00
To: Christensen, Eric
Subject: Re: [despammed] RE: [aprssig] Kenwood TM-D700A as a DIGI?
Thanks for the info. What a good (and cheap) TNC2 clone going for nowdays?
I've heard the TM-261A makes a good packet radio since it has the receive
signal on the mic plug. 73, Dave
----- Original Message -----
From: "Christensen, Eric" <CHRISTENSENE@mail.ecu.edu>
To: "'Dave Land'" <kd5fx@despammed.com>; "TAPR APRS Special Interest Group"
<aprssig@lists.tapr.org>
Sent: Tuesday, March 30, 2004 5:40 PM
Subject: [despammed] RE: [aprssig] Kenwood TM-D700A as a DIGI?
> Dave,
> I have used my D700A for a digipeater on a special event. Just
> include WIDE, RELAY, and TRACE in the UIDIGIPEATER part under the APRS
> settings. BUT, for a lot less, you can get you a TNC2 clone and get a
> real
digipeater
> firmware (UIDigi?) for it and hook it up to a radio. You will
> probably spend half as much as what you paid for the D700 and it will
> support n-N protocols and lots of other things to help keep the
> network clean.
>
> It is a lot better choice.
>
> Eric KF4OTN
>
> -----Original Message-----
> From: Dave Land [mailto:kd5fx@despammed.com]
> Sent: Tuesday, March 30, 2004 12:28 PM
> To: TAPR APRS Special Interest Group
> Subject: [aprssig] Kenwood TM-D700A as a DIGI?
>
>
> Has anyone used the TM-D700A as a DIGI? If so, how well did it work?
> What settings did you use? I've got an VHF antenna at 250ft and
> looking for a good, fairly inexpensive but easy setup DIGI for APRS.
> Thanks & 73, Dave
> KD5FX
>
> ---
> You are currently subscribed to aprssig as: christensene@mail.ecu.edu
> To unsubscribe send a blank email to
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> Questions regarding the SIG go to the SIG administrator: wa1lou@tapr.org
>
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----------------------------------------------------------------------
Subject: Re: New tracker design suggestions
From: David VanHorn <dvanhorn@cedar.net>
Date: Tue, 30 Mar 2004 19:29:57 -0500
X-Message-Number: 27
At 04:17 PM 3/30/2004 -0800, Scott Miller wrote:
>> The "easy-Bake" SMD production method is somewhat labor intensive, but
>very cost effective for small quantities.
>
>You mean doing reflow with a toaster oven, like this:
>http://www.seattlerobotics.org/encoder/200006/oven_art.htm ?
Log into the easy-bake group on Yahoo.
>Haven't tried it, for the simple reason that the solder paste is $42 for 35
>grams, has to be shipped overnight and refrigerated, and then has a shelf
>life of weeks. It wouldn't be so bad if I could keep a tube around for a
>few months.
It's not THAT critical, though our plant wouldn't violate the spec.
We use it in more like gallon buckets though :)
>> One approach that's easy to do with standard tools, is Thruhole ICs, and
>SMD Rs and Cs on the bottom of the board. 1206 parts fit nicely under a DIP,
>using 8 mil track and space, and the right pad sizes.
>
>The bigger problem for me is that most of the parts I want to use aren't
>available in thru-hole at all. Only one of the critical chips in my design
>is available in a DIP package, and that's a big 42-pin SDIP that'd take up a
good portion of the board. The modem, FRAM/RTC, and USB interface are only
available in SMT packages.
I hear ya. :) Prototyping is getting to be quite difficult.
ICEing takes very pricey adaptors, though Atmel now has a one-wire Jtag that
works through the /Reset pin and dosen't eat any of your I/O.
Still, Jtags are pretty limited, compared to full ICE systems.
>I figured it was finally time to bite the bullet and start working with the
>stuff. As long as you've got a good soldering iron, fine-tipped tweezers, a
flux pen, and good eyesight, it's really not so bad.
3 out of four isn't bad. :) I have a 10x stereo microscope.
----------------------------------------------------------------------
Subject: Re: New tracker design suggestions
From: "Scott Miller" <scott@opentrac.org>
Date: Tue, 30 Mar 2004 16:38:18 -0800
X-Message-Number: 28
> Log into the easy-bake group on Yahoo.
Not seeing it. Just the recipie one...
> It's not THAT critical, though our plant wouldn't violate the spec.
> We use it in more like gallon buckets though :)
Can it be frozen?
> I hear ya. :) Prototyping is getting to be quite difficult.
Yeah, having to etch lots of little breakout boards so I can breadboard
things...
> ICEing takes very pricey adaptors, though Atmel now has a one-wire Jtag
that works through the /Reset pin and dosen't eat any of your I/O.
> Still, Jtags are pretty limited, compared to full ICE systems.
The HCS08 series uses a BDM (background debug mode) pin, that does the same
thing - it might actually BE the same thing with a different name, but I
haven't been able to confirm that. It's a single dedicated pin, so not a
big deal for a 44QFP. I'm planning on including the standard 6-pin header
on my finished boards.
I've never used a 'real' ICE, so a working BDM debugger is a huge
improvement for me, compared to the old serial HC08 monitor. The SofTec
board I'm using is slow, though. I'll probably buy a P&E BDM USB adapter
soon.
> 3 out of four isn't bad. :) I have a 10x stereo microscope.
Yeah, that's on my list. I've got a binocular microscope that's OK for
inspecting finished stuff, but no good for working under. Can't do less
than 75x, for starters.
Scott
N1VG
----------------------------------------------------------------------
Subject: Re: New tracker design suggestions
From: David VanHorn <dvanhorn@cedar.net>
Date: Tue, 30 Mar 2004 20:00:51 -0500
X-Message-Number: 29
At 04:38 PM 3/30/2004 -0800, Scott Miller wrote:
>> Log into the easy-bake group on Yahoo.
>
>Not seeing it. Just the recipie one...
http://groups.yahoo.com/group/E-Z_Bake/
Sorry, I'm the moderator, I should remember these things.
It's not a really chatty group.
:)
>> It's not THAT critical, though our plant wouldn't violate the spec.
>> We use it in more like gallon buckets though :)
>
>Can it be frozen?
Vancouver wouldn't do it, but I don't see why it would be a problem for this
sort of use. The main problem is oxidation of the lead, and that's going to
slow.. Maybe just refrigeration.
>Yeah, that's on my list. I've got a binocular microscope that's OK for
>inspecting finished stuff, but no good for working under. Can't do less
>than 75x, for starters.
Yeow! That's a bit too turbo.
Mine was a surplus thing, I missed out on the electron microscope that day.
Not sure what I would use an EM for, or WHERE I would put it, but I would have
made a hole!.
----------------------------------------------------------------------
Subject: Re: Kenwood TM-D700A as a DIGI?
From: "Robert Bruninga" <bruninga@usna.edu>
Date: Tue, 30 Mar 2004 20:37:47 -0500
X-Message-Number: 30
Be very careful about activating DIGI in the D700.
It works great, but there is some indication
that when you turn it off again later, it is not really
off. Jury is still out, but be cautious AFTER returning to
non-digi service... Bob
>>> "Dave Land" <kd5fx@despammed.com> 3/30/04 5:27:36 PM >>>
Has anyone used the TM-D700A as a DIGI? If so, how well did it work?
What
settings did you use? I've got an VHF antenna at 250ft and looking for
a
good, fairly inexpensive but easy setup DIGI for APRS.
Thanks & 73,
Dave
KD5FX
---
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----------------------------------------------------------------------
Subject: Re: New tracker design suggestions
From: Jeff King <jeff@aerodata.net>
Date: Tue, 30 Mar 2004 21:48:41 -0500
X-Message-Number: 31
On Tue, 30 Mar 2004 16:17:02 -0800, Scott Miller wrote:
>>The "easy-Bake" SMD production method is somewhat labor intensive,
>>but
>very cost effective for small quantities.
>
>You mean doing reflow with a toaster oven, like this:
>http://www.seattlerobotics.org/encoder/200006/oven_art.htm ?
Yeah, I tried that once. Nightmare of shorts and debugging. Now I solder all
my SMD's, at least for prototypes, including 25 mil pitch parts.
----------------------------------------------------------------------
Subject: Re: New tracker design suggestions
From: Jeff King <jeff@aerodata.net>
Date: Tue, 30 Mar 2004 21:54:26 -0500
X-Message-Number: 32
On Tue, 30 Mar 2004 16:38:18 -0800, Scott Miller wrote:
>>3 out of four isn't bad. :) I have a 10x stereo microscope.
>
>Yeah, that's on my list. I've got a binocular microscope that's OK
>for inspecting finished stuff, but no good for working under. Can't
>do less than 75x, for starters.
Once you get one, you'll wonder how you ever got along without one. By far,
my best investment for SMD. I have a used Nikon stereo microscope, the dial
says 0.66 to 4X, but there must be a multiplier or something as it seems
about 2x at the lowest setting.
Two things that you'll notice:
1. How many joints you thought were good, weren't
2. And how much steadier your hand is under the scope then it is soldering
SMD with the bare eye. Really weird if you ask me, it must be some sort of
mind feedback kind of thing, but it makes a huge difference.
It has gotten to the point, that it is easier for me to put together a SMD
board then a thru-hole one with it. Course, after 10 or so boards, your kinda
ready for the assembly house in any case!
-Jeff
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