[GreenKeys] strange dovetron?

Don Cunningham donc at martineer.net
Tue Dec 22 18:11:01 EST 2020


I don't think you had a lot of choice with the Dovetrons, at least any 
that I have seen.  I don't remember ever seeing one with the CRT.  
Personally, I prefer the scope, even though most of them were even 1" 
ones, just easier to tune for me, likely since my early experience with 
the scopes while in the Navy.  Brighter to my eye and not "blurry", like 
some of the LED tuning indicators.  The scope will also show you if the 
shift is off, but the LED doesn't show me that.  It will show if the 
tones aren't balanced.

Now, thinking back, the tuning meter that HAL used and most of us 
scratch builders used on Irv Hoff's early publications in Ham Radio 
Magazine as well, AS LONG as the TU was set up right (ST-5AS, ST-6, etc) 
and tones balanced, that 1ma meter tuning was very hard to beat.  Just 
tune for maximum and watch it print.

Business reality, as one poster just pointed out, drove most to the LED 
display.  HAL must have had a TON of the small CRT's, as they kept that 
display to nearly the end, just the ST-8000A types being LED.  The 
ST-8000 was a larger CRT and nice too.

Nice to see the old units again.  I need to get some of mine out of 
storage and put them in a rack so I can play more.  I have many 
different ones, Dovetron, IRL, AEA, HAL, DT-600's, etc.  Most of the 
ones I have found in these latter years, or kept from building/buying 
them "in the day".  I use the ST-8000 most of the time now, but did buy 
a ST-6000LT unit with MUCH better filtering as Bill was closing them out 
from a defaulted commercial contract.  It copies as well as the ST-8000 
IMHO, but doesn't do FSK easily and I prefer that.

Opinions vary all over the board, I know.  Having fun is the main 
thing.  I sure wish more "old time" RTTY rag chewers would get on the HF 
bands more.  Hard to find a good QSO like was so common in the older days.
73 all,
Don, WB5HAK

On 12/22/2020 3:23 PM, W2HX wrote:
>
> Beautiful! Curious how people like the cross-LED display vs a scope? 
> Easier to tune? Same difference?
>
> *From:* greenkeys-bounces at mailman.qth.net 
> <greenkeys-bounces at mailman.qth.net> *On Behalf Of *Ralph Irish
> *Sent:* Tuesday, December 22, 2020 2:19 PM
> *To:* david freeman <_dave.f at mail.com>
> *Cc:* greenkeys at mailman.qth.net
> *Subject:* Re: [GreenKeys] strange dovetron?
>
> *Here is a photo of two of my DOVETRON TUs, one in each color/style:*
>
> *On Dec 22, 2020, at 11:29 AM, david freeman wrote:*
>
> *
>
> *
>
>     *I have at least one Dovetron with a tan panel and a blue case.*
>
>     **
>
>     *Dave*
>
>     *WW8S*
>
>     **
>
>     **
>
>     *Sent: Sunday, December 20, 2020 at 5:32 PM
>     From: "Paul Heller" <paul0926 at comcast.net
>     <mailto:paul0926 at comcast.net>>
>     To: "W2HX" <w2hx at w2hx.com <mailto:w2hx at w2hx.com>>
>     Cc: GreenKeys at mailman.qth.net <mailto:GreenKeys at mailman.qth.net>
>     Subject: Re: [GreenKeys] strange dovetron?*
>
>     *Funny! Looks like someone reused a Dovetron case. But I’ve never
>     seen a tan front panel for a Dovetron. Only black. *
>
>     **
>
>     *Certainly one of a kind homebrew! I wonder if they hooked up the
>     tuning indicators.
>     *
>
>     *Paul
>     W2TTY
>
>     ITTY: HTTP://INTERNET-TTY.NET:8000/ITTY
>     <http://internet-tty.net:8000/ITTY>
>     ITTY100: HTTP://INTERNET-TTY.NET:8010/ITTY100
>     <http://internet-tty.net:8040/EUROPE> *
>
>     *AUTOSTART: HTTP://INTERNET-TTY.NET:8030/AUTOSTART
>     <http://internet-tty.net:8030/AUTOSTART>
>     EUROPE: HTTP://INTERNET-TTY.NET:8040/EUROPE
>     <http://internet-tty.net:8040/EUROPE>*
>
>     **
>
>         *On Dec 20, 2020, at 11:17 PM, W2HX <w2hx at w2hx.com
>         <mailto:w2hx at w2hx.com>> wrote:
>         *
>
>         ****
>
>         *Anyone else see this?*
>
>         *https://www.ebay.com/itm/164579229586?ul_noapp=true*
>         <https://www.ebay.com/itm/164579229586?ul_noapp=true>
>
>         **
>
>         *Internal pictures look a LOT like an ST6!*
>
>         **
>
>         *73 Eugene W2HX*
>
>         **
>
>         *
>
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