[GreenKeys] GreenKeys Digest, Vol 93, Issue 18
n5912j at comcast.net
n5912j at comcast.net
Sat Oct 15 17:58:32 EDT 2011
I still have my Alltronics Model L. Not used in many years and available shipped stateside for a decent offer. Many other TUs including Frederick etc... Just too many good units sitting idle here and I'm not getting any younger. Reply off list to rdavis7 at Comcast.net
----- Original Message -----
From: greenkeys-request at mailman.qth.net
To: greenkeys at mailman.qth.net
Sent: Wednesday, October 12, 2011 12:02:54 PM
Subject: GreenKeys Digest, Vol 93, Issue 18
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Today's Topics:
1. Re: an idea (Jim Haynes)
2. Re: an idea (Jim Haynes)
3. Re: Anyone know about the Alltronics-Howard "Telewriter" TUs?
(Lester Veenstra)
4. Re: an idea (Lee Mushel)
----------------------------------------------------------------------
Message: 1
Date: Tue, 11 Oct 2011 20:19:34 -0500 (CDT)
From: Jim Haynes <jhhaynes at earthlink.net>
Subject: Re: [GreenKeys] an idea
To: epvgk at limpoc.com
Cc: GreenKeys at mailman.qth.net
Message-ID: <alpine.LFD.2.02.1110112010390.7431 at Frances>
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
On Tue, 11 Oct 2011, epvgk at limpoc.com wrote:
> The ironic thing is if you want to talk to someone via RTTY on HF radio,
> you almost need to arrange it ahead of time on the internet. The few times
> I've tried to find anyone to talk to with the teletype, all the traffic
Yep, most of the casual rag chewing has deserted RTTY for PSK31, leaving
RTTY to the DX chasers and contesters. I believe the reason is that
PSK31 has a slower turnaround time. In DX and contests the quick
turnaround of RTTY is beneficial, and you don't care if you get perfect
copy; if it looks like what you want it to look like, you call it good.
Short of arranging a contact ahead of time, we could decide on a specific
frequency as a "watering hole" as is done for some of the other odd
digital modes. And we could schedule a time of day for a round table.
Back in the glory days of RTTY there was usually a round table every
night of the week. Then W0BP held court on Sunday afternoons, calling
for check-ins from all the call areas from one to zero.
------------------------------
Message: 2
Date: Tue, 11 Oct 2011 20:57:39 -0500 (CDT)
From: Jim Haynes <jhhaynes at earthlink.net>
Subject: Re: [GreenKeys] an idea
To: hwhall at compuserve.com
Cc: GreenKeys at mailman.qth.net
Message-ID: <alpine.LFD.2.02.1110112020490.7431 at Frances>
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
On Tue, 11 Oct 2011, hwhall at compuserve.com wrote:
> If you rely on the phone company landlines, the event that wipes the
> computers will take it down, too, I imagine. It's computer switched,
> optic fiber connected (with solid state optical signal
> boosters all over), and so on. In the event of that flare, the power
> lines are going away, too, so much of our ham stations will be offline.
> --Wayne
> WB4OGM
And if there is a tornado or earthquake your ham station will be buried in
rubble, or blown all over the countryside, and you might be gone with it.
You have to decide what eventuality you are likely to encounter and
what you want to survive.
Things I've been through in the last dozen years are multi-day power
outages, where a generator kept me on the air and the wire telephones
and Internet kept working.
------------------------------
Message: 3
Date: Wed, 12 Oct 2011 06:51:17 +0100
From: "Lester Veenstra" <talktalk at veenstras.com>
Subject: Re: [GreenKeys] Anyone know about the Alltronics-Howard
"Telewriter" TUs?
To: "'Jim Haynes'" <jhhaynes at earthlink.net>,
<greenkeys at mailman.qth.net>
Message-ID: <004101cc88a2$f7427930$e5c76b90$@com>
Content-Type: text/plain; charset="iso-8859-1"
I had known Tom Howard, even purchased a mod 32 from his place behind the
State House on Beacon Hill.
My first TU was one of his and I still have it. It was a reasonably
conventional design with 88mhy torroids, ability to run with and without
hard limiter, ability to "axis restore", an early DTC.
One cute trick he used as extra tuned circuit on the indicator CRT rather so
that you got a nice cross hair without the ellipses you got with just the
detector channel outputs.
I have three documents from him, I will make PDFs from and email to all
interested.
(1) Price list of new and reconditioned
(2) TELEWRITER FREQUENCY SHIFT CONVERTER MODEL L
(2) TELEWRITER FREQUENCY SHIFT CONVERTER MODEL X
Lester B Veenstra M?YCM K1YCM
lester at veenstras.com
m0ycm at veenstras.com
k1ycm at veenstras.com
?
US Postal Address:
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APO AE 09468?USA
UK Postal Address:
Dawn Cottage
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HG3 1SD, UK
Telephones:
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Home:???? +44-(0)1943-880-963
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-----Original Message-----
From: greenkeys-bounces at mailman.qth.net
[mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of Jim Haynes
Sent: Wednesday, October 12, 2011 1:39 AM
To: greenkeys at mailman.qth.net
Subject: [GreenKeys] Anyone know about the Alltronics-Howard "Telewriter"
TUs?
In the early 1960s there were some RTTY terminal units manufactured
by Alltronics-Howard, the Howard being Tom Howard of the Boston area.
Last night I was reading some old issues of RTTY and saw an article
by Don Wiggins W4EHU. Apparently Irv Hoff had criticized the Alltronics
unit; and Don rebutted his criticism, saying he had a hand in its
design and it was a better design than Irv was giving it credit for.
Now Don Wiggins had a lot of credibility, being a professor of E.E.
in Florida as well as a ham, and having a fine understanding of things
both theoretical and practical. Either I had forgotten or I was never
aware of Don's connection to the Alltronics T.U. It would be interesting
now to know what was in the design and how it compares with the
competition. Irv at this point in time had designed his "Mainline"
T.U. which came before the TT/L and later models. Alltronics had
several models: there was a Model K about the time of Don's article
and a later model L that was reviewed in QST.
Any information will be appreciated.
Jim W6JVE
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------------------------------
Message: 4
Date: Wed, 12 Oct 2011 08:24:36 -0600
From: "Lee Mushel" <herbert3 at centurytel.net>
Subject: Re: [GreenKeys] an idea
To: <epvgk at limpoc.com>, "Jim Haynes" <jhhaynes at earthlink.net>
Cc: GreenKeys at mailman.qth.net
Message-ID: <6142386304CA46F4B9922865A48E0867 at NewComputer>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Eric,
I see a terrible problem with ham radio! During a period of over twenty
years I was inactive and when I returned to the hobby as a retirement
activity I found it completely changed from what I remembered. I feel the
difficulty is due to the overpowering "richness" of our interest! There
are so many things that I want to do and can't find time for that it's
almost depressing! Upon my return I was shocked to receive one of the first
books I ordered, RTTY of course, and saw not one reference to a Teletype
machine! I was aware that the computer was being used but I hadn't realized
that it had replaced the machine very nearly 100%! I have to plead guilty
to not having been on the air with "true" RTTY although, surely, I could do
it if I only had the time! Of course I have a couple of your fine
demodulators and I don't know how many other terminal units including both
commercial and home brew. I do have a pristine 28KSR with the telephone
box from the hard of hearing circuit and a half dozen other machines that
require only the flip of the power toggle to work on a local loop. I even
brought back a dial telephone with the properly shaped receiver to turn on
that machine!
But there are so many other competing aspects of ham radio now that I simply
don't know where to turn next! The first thing to hit me was Software
Defined Radio and the multitude of digital formats. For an old person with
declining abilities that has taken me three years to become "sort of"
comfortable. I had never given much thought to emergency communications
before but now I have substantial coin and effort invested in that.
I have always been more interested in electronic construction than operating
and that continues. I have spent a lot of time "elmering" and while at
first I wasn't sure this was a rewarding activity I recently have been
forced to change my mind since some activities of the "students" are simply
mind boggling. I can now claim some success in bringing them past the two
meter repeater stage! And they do understand that it is absolutely
necessary to "progress" past the Technician Class license.
At the moment I have five antenna projects that I hope to complete before
the Wisconsin Winter sets in. I know I won't make it! But one has to be
done today since I promised that I would be listening for an east coast net
tonight. I'm sure a lot of folks share this problem.
73
Lee K9WRU WD2XSH/32
----- Original Message -----
From: <epvgk at limpoc.com>
To: "Jim Haynes" <jhhaynes at earthlink.net>
Cc: <GreenKeys at mailman.qth.net>
Sent: Tuesday, October 11, 2011 6:21 PM
Subject: Re: [GreenKeys] an idea
> On Tue, Oct 11, 2011 at 07:13:46PM -0500, Jim Haynes wrote:
>>
>> But now if we are worried about the telephone/internet infrastructure,
>> well there is always amateur radio, "when all else fails." Some members
>> of this group are operating with Real Teletype machines rather than with
>> computers.
>>
>> Jim W6JVE
>>
>
> The ironic thing is if you want to talk to someone via RTTY on HF radio,
> you almost need to arrange it ahead of time on the internet. The few times
> I've tried to find anyone to talk to with the teletype, all the traffic
> out there was contest/DX traffic, no conversation, and only "599 599 TX
> QRZ???" type exchanges. I've only ever been able to make an actual contact
> two or three times with someone who was willing to talk to a domestic,
> non-contest operator... :(
>
> eric
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> Please help support this email list: http://www.qsl.net/donate.html
>
>
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