[TenTec] din connector, etc.

[Jim Brown]

Understood, Rick.  But 17msec pretty much rules out QSK above about 18 
WPM. A strange design compromise for Ten Tec.  :)  Frankly, I'm both 
surprised and disappointed to see Ten Tec go for the lowest common 
denominator -- they never used to do that.  For my money, amps with open 
frame relays are for ragchewing on SSB, not serious operating.

FWIW, delay in the K3 is continuously adjustable, and I think it is in 
the FT1000MP too. I sold mine around 2008 to buy my K3s. The TS850, 
which I also owned,  is fixed at about 8 msec. The K2 is 8 msec.

Also FWIW, K6XX published a simple "speed up" circuit for T/R relays 
quite a few years ago, which he credits to K1KP. 
http://www.k6xx.com/radio/fastrely.pdf

73, Jim K9YC

On Wed,9/24/2014 2:08 AM, Rick - DJ0IP / NJ0IP wrote:
> Jim, I just sent an email explaining exactly how the Eagle works.
> The Orion and Omni VII both have 15mS initial delay.  The Eagle is 17.
>
> "17mS" is relative.
>
> For amps with vacuum relays or PIN Diode switching, it is long.
> For amps with open-frame relays it is too short.
>
> I have never seen an open-frame relay that can switch in all cases, no
> matter what, in less than 20ms.
> The open-frame relay used in all Ameritron amps can occasionally take as
> long as 22mS - even though Ameritron advertises 15mS.