26 Dec. @ 1920 OK, I could not wait until tomorrow to compare the Larsen NMO-27 to the Browning BR-140-B. VSWR with the BR-140-B is; 1.3:1 on Ch. 1 and on Ch. 40. 1.1:1 on Ch. 20. The VSWR measurements on channel 20 on both antennas are so close to each other that it is like splitting hairs. Larsen = 1.0:1 and BR-140 = 1.1:1. The BR-140 was the last antenna I installed and tested tonight and it's not coming off. I'll store the Larsen behind the seat as a spare. Note: Diameter at the bottom of the BR-140 antenna mast = 0.085" and 0.105" diameter on the Larsen NMO-27 antenna mast. Splitting hairs!