Penny's GMRS antenna was ok, but it being below the roofline of the vehicle made it choppy and inconsistent. Kenneth brought a new antenna on our most recent Moab adventure, and like most in this situation, replaced it in the hotel parking lot.

This time, he brought a new tool along, to help tune the new antenna. On Amazon, he picked up a NanoVNA. This device can be used an an antenna analyzer, providing more feedback results than a standard SWR meter. And it's not all that expensive!

Common Frequency ranges (Colorado Radio Amateur bandplan):
70cm 420.0450.0 (FM Voice 438446.700, 433.00441.700, 440.700446.275, 433.425449.975)
2m 144.1 148.0 Mhz (FM Voice 146.400147.585, 144.500145.500, 146.0148.0)
GMRS 462.550 467.712500
CB 25.165 28.755 Mhz (26.965 27.405 MHz common)

AURSINC NanoVNAH Vector Network Analyzer 10KHz 1.5GHz Latest HW Version 3.6
https://a.co/d/f1KWOVy

Gam3Gear Surecom SW102S SO239 Connector Digital VHF UHF 125525Mhz Power & SWR Meter
https://a.co/d/4fV31Fc

Long AntennaDiamond Antenna DualBand Mobile Antennas NR770HBNMO
https://www.dxengineering.com/parts/d...

Short AntennaTRAM 140MHz170MHz + 430MHz470MHz Dual Band NMO Antenna (1181):
https://a.co/d/cXpxDLg

Follow along as Penny gets a small upgrade.