[ML-Hams] Latest Donation

Sun Oct 9 08:04:58 CDT 2016

I agree that if the goal is just to get on the air, a modern radio is going to be the smoothest path to that goal.  I'd be willing to chip into the pot to get one.
Do we know if that old power supply works?  It should, that tech hasn't changed in a long time.

Lisa

      From: Bruce Campbell <phillybruce at gmail.com>
 To: amateur radio discussion <hams at lists.makerslocal.org> 
 Sent: Saturday, October 8, 2016 9:39 PM
 Subject: Re: [ML-Hams] Latest Donation

There are some dirt cheep duel band radios entering onto the market from Chinese manufacturers. Why not just take up a collection and buy one. Even if we get these old radios to work, they will be a pain to use on a regular bases. We can use them for projects.

On Sat, Oct 8, 2016 at 9:26 PM, Bruce Campbell <phillybruce at gmail.com> wrote:

I briefly went by to look at then tonight (Saturday). It looked like someone had already tried to get them working. The TM-2520A didn't have any audio as I assume someone had already determined.. I found out that tone squelch was set and I think I turned it off. Still no audio though. One of them had been opened up. I didn't mess with it. 
I will get my dummy load and power meter and head over tomorrow. I I will get the manuals from the web and (if I can find someone to let me in) see if I can get a squeak out of something. 

On Sun, Oct 2, 2016 at 9:42 AM, Bruce Campbell <phillybruce at gmail.com> wrote:

Leaving on vacation is unfortunate!? Enjoy your time off. 

Who else can I work with while you are gone? If I could get in I could set it up but it would better for the group if we did it together.

Bruce
KG4HLZ

On Sun, Oct 2, 2016 at 9:09 AM, Jeff Cotten <omegix at gmail.com> wrote:

I think so!  I'll try to look for it next time I'm over there :)
I'm unfortunately leaving next week for a 2 week vacation, so it will be a hot minute before I can interact with the equipment again :)
On Sat, Oct 1, 2016 at 8:33 PM, Bruce Campbell <phillybruce at gmail.com> wrote:

Jeff,

Have you seen anything that looks like this around the shack?
http://www.geocities.jp/tnc_ga llery/mfj70b_1.jpg

On Sat, Oct 1, 2016 at 8:23 PM, Bruce Campbell <phillybruce at gmail.com> wrote:

There was an AX-25 TNC around there at one time. You would have all that you need for a packet station. 

On Sat, Oct 1, 2016 at 8:05 PM, Kris Kirby <kris at catonic.us> wrote:

On Sat, 1 Oct 2016, Bruce Campbell wrote:
> do you know there history?

WA4DXP-1 was HSVN on 145.01, WA4DXP-5 was HSVN on 145.65, both Alinco
DR-1200s; I believe WA4DXP-6 was 433.8 MHz using an RCA radio. Or
WA4DXP-6 was 145.65, and WA4DXP-5 was something else...

K4IQU (Dave Light) was the callsign of 146.94/34 before it had the N4HSV
callsign on it. The BBS (K4BFT/K4BFT-1) had the club call as well.

144.97, 145.01, 145.05, and 145.09 were all used for 1200 bps AX.25
packet radio, along with 145.65. 147.565 was used for 9600 bps packet.
433.8 was 2400 bps. The maximum common rate that fits in a voice channel
without 'tricks' was 2400 bps. Motorola liked 3,600 Hz using MSK for
trunking. 9600 bps required access to the modulator and discriminator
because 9.6KHz was outside of the audio system's 300 - 4 KHz bandwidth.

1200 bps was the shipping data rate of the TAPR TNC2; 2400 bps and 9600
bps required modems be installed on a 20-pin connector in the TNC2. MFJ
must have sold 10,000 of those TNC2 clones.

I refer to AX.25 1200-9600 bps as "802.11 dot slow."

But then again, I still have my KPC-9612.

--
Kris Kirby, KE4AHR
Disinformation Architect, Systems Mangler, & Network Mismanager

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