Here’s a gadget you might have a need for — a Frequency Counter. I bought this one on eBay for $18 shipped!
It amazes me that these can be made so cheaply now. Now, don’t get me wrong, I know this is almost a toy, but it might just meet your requirements, and the price can’t be beaten!
Super cheap Frequency Counter
This GOOIT frequency counter can read out a range from 50 MHz to 2.4 GHz.
Frequency Counter Features
- Frequency Range: 50Mhz to 2.4Ghz
- Distance covered: 8m for U-band and 5m for V-band
- Battery: 9V
- Dimensions: 9.4cm x 5.7cm x 2.3cm / 3.7” x 2.2” x 0.9”
- Net Weight: 112g
- Auto switch-off
- Single-button control
- Collapsible whip antenna
- 7 DIGIT LCD Display with a signal meter