[TenTec] Omni VI+ Keying

[Robert & Linda McGraw K4TAX]

The Paragon is responding correctly.  The pulser is keying the keyer of the 
Omni VI+.  Depending on the Keyer Speed of the Omni VI+ it will be 
different.

73
Bob, K4TAX


----- Original Message ----- 
From: "Michael Tope" <W4EF at dellroy.com>
To: <tentec at contesting.com>
Sent: Friday, August 12, 2005 9:52 PM
Subject: [TenTec] Omni VI+ Keying


>I just did an interesting experiment comparing my Paragon
> 585 (aka "Paragon 1") to an Omni 6+ that I just picked up
> on Ebay. When I connect my Inrad Key Pulser
> ( http://www.qth.com/inrad/) to the Paragon, the forward power
> reading on my Diawa CN-620B wattmeter reads in rough
> proportion to the duty cycle setting of the Key Pulser (e.g.
> if the wattmeter reads 100 watts at a Key Pulser duty cycle
> setting of 100%, it read ~50 watts when the key pulser duty
> cycle is set to 50%).  Thus, using the Key Pulser with the
> Diawa wattmeter, I can tune my amplifier at a 50% duty
> cycle and just double the wattmeter reading to get the PEP
> output level, thus minimizing the wear and tear on the amplifier.
>
> When I try doing the proceeding with the Omni 6+, the
> meter reading at anything less than 100% duty cycle
> on the Key Pulser is about 10% of the full-scale (e.g.
> key-down) wattmeter reading. I haven't put the Omni 6+
> on my O'scope yet, but it sure seems like it is truncating
> the pulses from the Key Pulser significantly compared to
> the Paragon. The keying speed of the pulser is 48 WPM
> with a variably duty cycle (50 msec pulse repetition rate,
> 0 to 100% duty cycle).
>
> Anybody have any experience with this?
>
> Thanks,
>
> Mike, W4EF..........................................
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