I have spent many hours laying on a tiled floor counting contour rings and transfering points to curved graph paper too...

-----Original Message----- From: Tim Hardy
Sent: Wednesday, June 19, 2019 5:50 PM
To: AnimalFarm Microwave Users Group
Subject: Re: [AFMUG] Proposed Licensed Link Potential Conflict

Ha ha, we did have a profile plot for dot matrix - probably based on digitized data from 1:250,000 maps. We used to have a gigantic room full of tapes with this data and if you crossed a map boundary, it would require many tape mounts, etc. - the good old days, but that sure beat taping the maps together, plotting the sites and hand picking the distances and elevations off the maps by hand. Basically the way that all microwave paths before the mid 80s were designed.

Sent from my iPad

On Jun 19, 2019, at 6:57 PM, <ch...@wbmfg.com> <ch...@wbmfg.com> wrote:

Gheeze I remember using a dial up modem to download path profiles from Comsearch back in the 1980s I think. Print them out on a dot matrix printer. Prior to that I think they arrived via fax machine.

A fax machine is a device that we used to use before civilization to help Nigerian princes access money that was tied up an a US bank account.

-----Original Message----- From: Tim Hardy
Sent: Wednesday, June 19, 2019 3:04 PM
To: AnimalFarm Microwave Users Group
Subject: Re: [AFMUG] Proposed Licensed Link Potential Conflict

Matt,

Send me the PCN and I’ll take a look at it and let you know. 2.8 MHz separation doesn't sound right at 11 GHz since there is no frequency plans that would give you that kind of separation.

Thanks,

Tim Hardy

FYI, I was one of the three founders of Comsearch back in 1977 and retired in 2017 after 40 years - enjoying life at the beach, so you can see, I have no dog in this fight.

On Jun 19, 2019, at 4:43 PM, mhopk...@onlinenw.com wrote:

Hello,

  We have a SAF 80MHz 11GHz link between a couple of towers. There is a
new PCN for a new 80MHz UBNT AF-11FX link that is at the same tower
site as one of our ends. Their path would shoot through our tower at
that site. There is 2.8MHz of separation between our channels and the
polarity is the same (H). We have many licensed links but we are
pretty rural and have not had any other PCNs this close to our
channels. Would you be comfortable with allowing this link? We reached
out to the coordinator for the new link and they said it is within the
acceptable range. Thank you in advance for any insight you can
provide.


Matt Hopkins
Network Administrator
503.687.1030
mhopk...@onlinenw.net
onlinenw.com


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