Hello James: Responding on behalf of DX Engineering. I do not see your email in the que.
You can separate the antennas 1/4 wavelength for 160 and the operation will also be OK on 80 meters. You need the larger spacing so that the NCC-2 will work on 160. If you have questions, please refer them directly to me. VY 73 Tim K3LR CEO DX Engineering -----Original Message----- From: Topband [mailto:[email protected]] On Behalf Of James Cizek Sent: Friday, August 6, 2021 8:38 AM To: [email protected] Subject: Topband: Question on active vertical spacing Hello all, It was a slow start for me to get on 160 Meters, but I finally was able to make that happen and last season was my first full season on the band. A lot of construction has happened in the nearby vicinity with new homes and I've started to experience certain point noise sources at times. Earlier this spring, I was totally unable to work a station because of the local noise source sitting right on top. I usually use a SAL-30 for receiving and am very happy with it. Because of this occasional noise source, I've opted to add an additional RX system this year. I recently acquired a DXEngineering NCC-2 and the DXE-ARAV4-2P active vertical antenna set in hopes of nulling out the local point source when needed. In the manual for the NCC-2, they state that the RX antennas should be 1/4 wave apart for optimum performance. I'd like to use this setup on both 80 and 160, so I was wondering if it would be better to place them 1/4 wave at 160 apart or 1/4 wave at 80meters apart. The instructions also state reduced performance with too great or too little spacing, so I am curious of opinions on optimal spacing for a compromise to use both bands. I wrote DXengineering tech support but they never responded, so thought I'd try the mind-trust here :) Thanks for any input. 73 James KI0KN ps- I am only at 44 entities on 160M so I'll be as active as the band lets me be this fall/winter! _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
