[Lowfer] Return loss bridge questions.

[stan, W1LE]

A few thoughts:

1. it is going to have a useable frequency range, maybe where you want 
it or somewhere else.
2. It is probably designed for a specific impedance, balanced or 
unbalanced. Maybe 50 ohm unbalanced.
3. It will have power limitations. Hopefully at levels you can produce.
4. the output port for the reflected signal may be raw RF or it may be 
detected with + or - polarity.

Suggest you research the manufacturer's specs to determine what it could 
do when it left the factory.

Start playing with it to see what response it will provide with known 
input and output conditions.

Stan W1LE     Cape Cod


On 14-Jan-14 10:45 PM, KD7JYK DM09 wrote:
> I have a "return loss bridge".  Figure I could use it for analyzing
> antennas.  I have various oscillators from Hz to many 10's of GHz, much more
> than the bridge can handle, but I figure I can test most everything with it.
>
> Input is obvious, also device under test, the "unknown", what I am not
> familiar with is what do I use to read the output?  What do I put here?  A
> Voltmeter?  RF detector of some sort?  Something to convert RF to Volts and
> look for the lowest reading/less return?
>
> I'm just not familiar with thing at all!
>
> Any info appreciated.
>
> Kurt
>
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