70cm

Eggtimer Rocketry is proud to announce the availability of our premier GPS tracking product, the Eggtimer TRS GPS transmitter/altimeter and the Eggfinder LCD receiver on the 70cm Ham band. This is our first Ham-only product, with some advantages over the non-licensed 900 mHz band products...

Can you tune a quadrifilar helix antenna for a frequency range vs. a specific frequency? There are a lot of documents as well as calculators for designing and tuning these home made antennas to a specific frequency. However as you know, sometimes we have to change frequencies on the field...