tag:blogger.com,1999:blog-4901205574058136834.post8034080889417550294..comments2024-03-26T20:17:30.126-07:00Comments on Every Blade of Grass: Finished My RF Safety Reportdrjimhttp://www.blogger.com/profile/05647484115197408897noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-4901205574058136834.post-14800323112676434502014-12-17T18:54:41.149-08:002014-12-17T18:54:41.149-08:00The top people are the ones we have to CYA for. On...The top people are the ones we have to CYA for. One of them is a Ham, and understands the issue exactly, so no problem there.<br /><br />Turns out that the minimum "safe" distance is 5 feet, and that's assuming NO coax loss between the transmitter and the antenna. Considering we're going through well over 100' of coax, the loss there is significant, resulting in less power <i>at</i> the antenna, so we have an even greater margin of safety.<br /><br />The stern antenna is mounted on top of the Helo Ops shack, about 10~12 feet above the deck, and the bow antenna is even higher than that off the deck.<br /><br />We already knew it was a non-issue, BUT we had to go through the numbers, and give the top people a written report so they could convey the results to the regular crew, most of whom know nothing about this stuff.<br /><br />And after our meeting today, everybody was happy, so all-in-all it went quite well.drjimhttps://www.blogger.com/profile/05647484115197408897noreply@blogger.comtag:blogger.com,1999:blog-4901205574058136834.post-73206898123992794522014-12-17T16:56:59.344-08:002014-12-17T16:56:59.344-08:00Yep, do a graphic and I'd look at painting a &...Yep, do a graphic and I'd look at painting a 'safety' line on the deck if they'll let you.Old NFOhttps://www.blogger.com/profile/16404197287935017147noreply@blogger.comtag:blogger.com,1999:blog-4901205574058136834.post-85457205374593011962014-12-17T08:31:43.299-08:002014-12-17T08:31:43.299-08:00(Forgot to check the "notify" button)(Forgot to check the "notify" button)Weetabixhttps://www.blogger.com/profile/06106614092497408546noreply@blogger.comtag:blogger.com,1999:blog-4901205574058136834.post-28430496590684787542014-12-17T08:31:16.094-08:002014-12-17T08:31:16.094-08:00Maybe you've already done this, but a table sh...Maybe you've already done this, but a table showing the minimum safe distances and the distances provided can go a long way with your audience that doesn't understand what you're talking about. <br /><br />When I'm doing reports like that, I put the table up front as a summary then put the specific calculations behind that. I'm not sure anyone but a few people read behind the table.Weetabixhttps://www.blogger.com/profile/06106614092497408546noreply@blogger.com