Directive Systems antennas are known to be well engineered and assembled. I have been to many antenna ranges to find that measured results are within 0.1 dB of claimed specs. Still, your points-of-failure include: Icom 9700 antenna jack. Check to make sure the center "fingers" of the N connector are not damaged or otherwise askew. Use different coax and retest. A problem with either connector can inject high SWR. Ditto if the coax itself has been crushed at any point along its length. Place a 50 ohm dummy load at the far end of the coax and retest. If it shows low SWR, then the problem is truly with the antenna; call directive systems with this information. They will take care of you. Here's hoping that these suggestions help (or offer you insights that eventually lead you to a solution). Kindly, Ev, W2EV
On Thursday, February 27, 2020, 7:48:21 PM EST, Sloan Davis via AMSAT-BB amsat-bb@amsat.org wrote:
Has anyone experienced any malfunction in transmitting on their Icom 9700 on the 1.2 gig (L-Band Mode)? My SWR’s are registering 3+ and I’ve changed antennas twice with direct connection/ connectors using N adapters. I’m using LMR 400 coaxial (50 foot) run. The power coming out of the radio is 8 watts via dummy load/meter. The antenna is from M2 and requires no tuning.
Not sure what else I can do?
Sloan (KN4GQB _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb