One of the tools I use a lot in the lab is the RF probe. Several people have expressed  interest in it, so I'm making it available to the world, for a nominal fee.

What it is:

The RF probe is a handheld probe assembly, comprised of:

1. a broadband DC block on the probe tip,

2. a minimum-loss pad,

3. a 50 Ohm cable, connecting to your indicating device, i.e. spectrum analyzer, network analyzer, or frequency counter.

What it does:

The RF probe acts like a minimum-loss matching network, converting your low-impedance test equipment into a higher input impedance at a probe tip, for making measurements that don't load down your circuit.

What it's good for:

It can be used for:

1. Tracing signal and distortion levels through a long chain of stages,

2. In the reverse direction, for injecting signals,

3. Other applications - see applications page.

Most RF engineers have their own versions of homemade RF probes. Properties that make this one unique are:

Click the further information link if you want me to build you one (or more).