I'll ask on the 565/566 reflector whether anyone has issues with the 15 ms
delay.
My relays close in under 1 ms and I don't notice a problem. Maybe I didn't
watch the scope close enough. I can hear echos.
Mike
W2AJI
Sent from my iPhone
> On Sep 24, 2014, at 4:13 PM, Rick - DJ0IP / NJ0IP <Rick@DJ0IP.de> wrote:
>
> MIKE, I AM COMPLAINING.
> NOW YOU ARE AWARE OF ONE! :-)
>
> By the way, the Orion originally shipped with no hang time.
> Scott and I had a hefty debate whether QSK was the only thing needed and
> eventually I convinced Jack that there were plenty of people who do not want
> QSK and plenty more whose amp can't cope with it, so he had Gary contact me
> to understand the problem and the requirements. Gary changed the software
> and the post dit delay (hang) was implemented.
>
> Unfortunately the Eagle didn't get this hang delay either.
> Therefore an external box is required to add it when running older amps in
> CW mode.
>
> 73 - Rick, DJ0IP
> (Nr. Frankfurt am Main)
>
>
> -----Original Message-----
> From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Mike
> Schatzberg
> Sent: Wednesday, September 24, 2014 9:08 PM
> To: k9yc@arrl.net; Discussion of Ten-Tec Equipment
> Subject: Re: [TenTec] din connector, etc.
>
> The Orion II delays RF for 15 ms after closure of the amplifier contacts.
> This applies to Ant1 and Ant2 as well.
>
> The amplifier hang time is adjustable for either Ant1 or Ant2 but the 15 ms
> delay is not adjustable and is applied in SSB and CW.
>
> The hang time keeps the amp from dropping out between characters if you
> wish. You can adjust it to hear your own echo coming back with very fast
> QSK.
>
> The 15 ms guarantees no hot switching of course with all QSK systems.
>
> No one has complained about a limitation in top speed that I am aware of.
>
> 73,
> Mike
> W2AJI
>
> Sent from my iPhone
>
>> On Sep 24, 2014, at 2:38 PM, Jim Brown <k9yc@audiosystemsgroup.com> wrote:
>>
>> 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.
>>
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