Thanks -- Keith KH6FQR
To save you guys doing the math:
50 Ohm Coll @14.2MHz = 0.561 Micro Henries
Using a 2" diameter toilet roll...
4 turns x 2" diameter x 2" length = 0.552 Micro Henries
So all you need to do to make a HF Probe is to take an empty toilet paper roll, wind 4 turns over 2" length and you have close to 50 ohm probe...
Or use a small 1/4" Dowel (pencil)
36 turns x 1/4" x 4" = 0.492 microhenries
I have a probe that I made just as Paul suggests, I left the centre conductor wire insulated so that when I was probing around in the radios I would not short things out!! Worked great for reading on the frequency counter. Also made a few probes on a piece of 3/4" PVC pipe with an SO239 connector for change ability.