[TenTec] Airpax circuit breaker for Orion

[Robert & Linda McGraw K4TAX]

>From the Omni VI + a piece of RG-213 about 3 ft long connected the Bird 43P 
with a 250 watt slug.  The other side of the Bird had a 12" length of RG-213 
connected to a Bird 50.5 ohm load or combination of  resistive loads to 
produce the required Z for measurement purposes.  The SWR values were 
calculated while the watt values were read on the meter.  Reactive 
components were not considered as all loads are resistive to near 1GHz.

I did not do a calorimetric measurement of power into the load nor did I 
consider the true source impedance of the Omni VI+ output circuit.

73
Bob, K4TAX

----- Original Message ----- 
From: "Sinisa Hristov" <shristov at ptt.yu>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Friday, December 02, 2005 10:32 PM
Subject: Re: [TenTec] Airpax circuit breaker for Orion


> Robert & Linda McGraw K4TAX wrote:
>
>> in looking at my Omni VI Plus operation into various
>> load conditions, I find that a 1:1 SWR and 90 watts output, the Ic 
>> current
>> is ~14 amps.  With a 100 ohm load, thus a 2:1 SWR the Ic is ~12 amps and
>> power output is 90 watts.  With a 25 ohm load, thus a 2:1 SWR the Ic is ~ 
>> 18
>> amps and power output is still 90 watts.  The point being a 2:1 SWR does 
>> not
>> tell you if you have a 100 ohm load or a 25 ohm load.  In my case, if the
>> load gets down to 12 ohms the Ic is 20+ amps and power output is still 90
>> watts  On the other side of the slope with a 200 ohm load, the SWR is 4:1
>> and power output is still 90 watts bit Ic is now only 10 amps.
>
>
> Were those 90 W actually delivered to the load in all cases mentioned?
> Or it was perhaps just an "incident" power?
>
>
> 73,
>
> Sinisa  YT1NT, VE3EA
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