[TowerTalk] WTB Top Ten Devices A/B Station Selectors

[Randy Farmer]

Yikes! And also very wrong. I moved the decimal point! Make that -0.16 
dB and -0.35 dB. Sorry about that.

73...
Randy, W8FN

On 2/6/2022 1:08 PM, Lux, Jim wrote:
> On 2/6/22 9:27 AM, Randy Farmer wrote:
>> Strange. I've got loads of them in many places in my station antenna 
>> switching and have never had a problem. Since I recently acquired a 
>> new NanoVNA-F and have three spare Top Ten A/B selectors, I decided 
>> to measure them all. I won't quote all the measurement results, but I 
>> will summarize.
>>
>> 1. Over the range of 1.5 MHz to 54 MHz, the insertion loss of a 
>> selected port went from about -1.6 dB worst case at 1.5 MHz to about 
>> -0.35 dB worst case at 54 MHz. The insertion loss curve (S21) was 
>> monotonic over the range.
>
> It's interesting that the loss goes *down* as the frequency goes up.