[R-390] Christmas Wish List (part 2)

[Tom Norris]

> Subject: Re: [R-390] Christmas Wish List (part 2)
> Reply-To: "Craig C. Heaton" <wd8kdg at worldnet.att.net>
>
>
>
> At our PMEL, when we are reading current in a loop, we add a 100 ohm
> resistor along with a resistor of the specified loop resistance  
> -100 ohms.
> The 100 ohm resistor is simply there because it makes the math easier.
> This could probably be used just as easily as a semi-precision  
> audio output
> meter.  Less calculator work by measuring across the resistor for  
> the "I"
> in the power measurement.
>
> Tom "call me lazy"
>
> On Dec 8, 2005, at 2:14 PM, Craig C. Heaton wrote:
>
>
>> Rodger KC6TRU,
>>
>> I see said the blind man! Your following explanation is just for  
>> the RF
>> section. More in coming days, thanks.
>>
>> Putting this into terms that us non-radio background old grayed  
>> hair farts
>> can understand helps. Using equipment on hand, I will add these  
>> comments.
>>
>> For lack of a TS585; the first time setting up this test, I'll use  
>> two
>> meters to measure voltage and current across the 600 ohm load  
>> resistor.
>> (P=IV)Write down those values somewhere not to be lost, for future
>> reference, and should only have to dial in the voltage next time  
>> (oh my). In
>> other words the first target is 0.4 watts across the 600 ohm load.

[snip]