[TowerTalk] Relay Box Measurements

[K8RI]

On 8/26/2012 9:54 AM, Jim Lux wrote:
> On 8/25/12 6:40 PM, Jim Brown wrote:
>> I'd like to compare data with anyone who has done careful measurements
>> of relay boxes from Array Solutions, Top Ten, and DX Engineering.  I've
>> just measured the boxes I have here, looking from 160M to 6M. Some
>> things I find acceptable and some I don't.  Some things I don't like I
>> can fix, some I can't.
>>
>
>
> when you do the measurements (using some form of VNA, I presume), do you
> cal with a set of standards with UHF connectors, or something else?
>
> (I've been thinking about measuring some stuff here, and I'm trying to
> decide whether I should try to use the UHF connectors as the measurement
> plane, or the SMA or N on the VNA test cables..)

I'm pretty new to VNAs so I just follow the manufacturer's directions.
I calibrate at the VNA (AIM 4170C)
I was looking at the whole cable run all the way to the antenna.  You 
can see just about every connector as a tiny blip.

73

Roger (K8RI)

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