You can save a ton of money by not bothering with that pesky coordination licensing stuff. Just put a label on the radio that it is property of the sovereign nation of (insert competitors name).
From: Hardy, Tim Sent: Tuesday, November 08, 2016 7:43 AM To: af@afmug.com Subject: Re: [AFMUG] Class A and B antennas At 11 GHz, 5 km is correct and paths under 5 kms can be coordinated and licensed as long as the EIRPs are restricted per the equation. At 6 GHz, the minimum distance is 17 kms. and the same equation applies for paths less than this distance. From: Af [mailto:af-boun...@afmug.com] On Behalf Of Ken Hohhof Sent: Tuesday, November 08, 2016 9:05 AM To: af@afmug.com Subject: Re: [AFMUG] Class A and B antennas Hmmmm, can you clarify on minimum distance? I was not aware of a min distance on 11 GHz, but if it’s only 5 km, maybe that was just never an issue. But I thought min distance at 6 GHz was more like 10 miles. Did I miss a change? From: Af [mailto:af-boun...@afmug.com] On Behalf Of Daniel White Sent: Tuesday, November 8, 2016 6:29 AM To: af@afmug.com Subject: Re: [AFMUG] Class A and B antennas Mostly answered… but I’ll take a stab: Class A vs Class B is about side-lobe suppression and F/B ratio. ETSI classes are the same way – and Class 4 antennas as Eric pointed out are a rare beast - For 11GHz, the smallest Class A antenna is the VHLP800 (2.6ft). Most 3ft antennas are actually a little bit bigger than 3ft (99cm) - For 18GHz, the smallest Class A antennas I am aware of are 2ft - Minimum distance for 11GHz and 6GHz is covered under FCC Part § 101.143, with the minimum distance being 5km (roughly 3.12mi). If you want to go shorter, than the max coordinated power you can use is calculated like this: EIRP = MAXEIRP–40*log(A/B) dBW EIRP = The new maximum EIRP (equivalent isotropically radiated power) in dBW. MAXEIRP = Maximum EIRP as set forth in the Table in Section 101.113(a). *This is +55dBW for 11GHz* A = Minimum path length from the Table above for the frequency band in kilometers. *This is 5km for 11GHz* B = The actual path length in kilometers. NOTE: For transmitters using Automatic Transmitter Power Control, EIRP corresponds to the maximum transmitter power available, not the coordinated transmit power or the nominal transmit power. Daniel White Managing Director – Hardware Distribution Sales ConVergence Technologies Cell: +1 (303) 746-3590 dwh...@converge-tech.com From: Af [mailto:af-boun...@afmug.com] On Behalf Of SmarterBroadband Sent: Monday, November 7, 2016 6:34 PM To: af@afmug.com Subject: [AFMUG] Class A and B antennas Does anyone make a 2 foot Class A antenna for 11 GHz? Or is 3 foot the minimum. Does anyone make a 1 foot Class A antenna for 18 GHz? Or is 2 foot the minimum. Is there a minimum distance for a 11 GHz link? Thanks Adam Virus-free. www.avast.com
