Using MarcoPoloHeartbeat example with Argon and Xenon, external antennas did make a big difference, as expected.
No modified antennas
@ 60 feet indoors, 10/10 broadcasts, Millis 15-65
@120 feet indoors, 9/10 broadcasts, Millis 13-71
@150 feet indoors, 7/10 broadcasts, Millis 15-47
@180 feet indoors, 1/10 broadcasts, Millis 15
Argon and Xenon both with external antennas
(FIRMWARE MODIFIED for external antenna selection
Using this antenna
@120 feet indoors, 9/10 broadcasts, Millis 14-71
@180 feet indoors, 7.6/10 broadcasts, Millis 15-73
