Improvement 1 (Easy) - Improve ground plane by placing over a metal sheet. (DONE in 2015 in another thread)
Improvement 2 (Easy) - Chop whip to 1/4 wavelength, reducing SWR to 1.5. This however does not improve gain, which still remains less than 2 dBi. (DONE in 2015 in another thread)
Improvement 3 (Advance) - Change straight whip by V-stub whip. This reduces SWR to 1.2 & Gain to 4 dBi. (DONE in 2020 in this thread)
Improvement 4 (Advance) - Remove plastic film from bottom of magmount, and stuff some aluminum foil to make a direct connection betwern metallic sheet and base plate. (To be done)
Improvement 5 (Advance) - Change magmount’s integral 1m cable by a better 1m cable and terminate new cable in a connector for dongle. Not practical as physically a larger diameter cable cannot be easily inserted in small magmount base. Also the 0.6 dB improvement is not worth the effort. (NOT to be done)