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Re: Wire length question
I’m no expert but as I’ve played around with wire antennas, and reading ARRL publications, I believe any folded over length of wire is not counted. What matters is end to end reach of the conductor. The part wrapped around or folded back is not counted.
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I do agree with Dan, the performance difference either way will be insignificant.
On Jul 11, 2020, at 10:04 PM, Howard E. Mahran / WA1HEM <wa1hem@...> wrote:
I realize this might be a silly question and the significance to the overall wire length minimal but the question is burning a hole in my head: Do you count the part of the wire that is tied around the ceramic insulator when measuring wire length ? I say “yes” <08C416AD-97C7-4404-877F-0AA41B5874B1.jpeg> -- ************************* Howard E. Mahran WA1HEM (425) 864 - 5104 *************************
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Re: Wire length question
Dan Pflugrath
I have always measured to where the wire goes through the insulator. In the real world unless you have some very accurate test equipment you will never know the difference in resonant frequency between up to the insulator and where the wire goes through the insulator..Even if the 1/2 inch changed the SWR by 0.5 you or the other station would not hear a difference.
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Re: Wire length question
Jackson Beard
I think yes is sort of correct. Some of the knot is not an effective radiator. The real question is does it matter. I don't think so.
On Sat, Jul 11, 2020, 22:04 Howard E. Mahran / WA1HEM <wa1hem@...> wrote:
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Wire length question
I realize this might be a silly question and the significance to the overall wire length minimal but the question is burning a hole in my head: Do you count the part of the wire that is tied around the ceramic insulator when measuring wire length ? I say “yes”
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Re: Real life Em Comm
Paul Butzi (W7PFB)
The Wilderness Protocol specifies monitoring 146.52 with 446.0, 52.525, 223.5, and 1294.5 Mhz serving as secondary frequencies. (Those are the FM calling frequencies on 2m, 70cm, 6m, 1.25m, 23cm bands)
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Ideally you’d monitor for 5 minutes at the top of every hour. Some folks say every three hours starting at 7am local time.
-p W7PFB
73, Don’t forget to smile and have fun!
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Re: Real life Em Comm
What are the standard intervals? Thanks, Rowland
On Sat, Jul 4, 2020 at 3:17 PM Robin Amundson <wa7cpa@...> wrote: Just got my DMR digital/analog radio on the air. Set it to scan the analog stations, lol. Immediately picked up a backpacking injured ham giving his information to another ham who had been on the QSO from the beginning. I do not know the location because I hadn't started in time, but the other ham has it and is going to continue monitoring. Injured ham will attempt to get down mountain on his own but asked for Search and Rescue to be called by a certain time and date if he doesn't get out. This weekend is a good time to keep scanning 146.52. A lot of hams are on mountains. This guy had no cell service but beautiful analog RF. Injured ham will attempt to call on 146.52 at standard intervals if there is service while he moves.
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Re: Real life Em Comm
Dale Smith <dale_smith@...>
Polled. I polled. Autocorrect "corrected" to killed. 😠 Sent from my T-Mobile 4G LTE device
------ Original message------ From: Dale Smith Date: Sat, Jul 4, 2020 8:15 PM To: Robin Amundson;snovarc@snovarc.groups.io; Cc: Subject:Re: [SnoVARC] Real life Em Comm I killed a number of police districts and was surp2 to discover they do not monitor the VHF/UHF bands. Thank God for vigelant Jams. Sent from my T-Mobile 4G LTE device ------ Original message------ From: Robin Amundson Date: Sat, Jul 4, 2020 3:17 PM Cc: Subject:[SnoVARC] Real life Em Comm So...there is no substitute for analog RF. Fortunately the Hytera repeater has analog and digital. It will be much more reliable. With digital we can get all our techs on the air talking around the world quicker and cheaper than HF. We can create our own programmed rules for use to keep our analog frequency clear and available at all times to preserve and protect our analog service. Happy Independence Day my ham friends! 73, Robin, WA7CPA
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Re: Real life Em Comm
Dale Smith <dale_smith@...>
I killed a number of police districts and was surp2 to discover they do not monitor the VHF/UHF bands. Thank God for vigelant Jams. Sent from my T-Mobile 4G LTE device
------ Original message------ From: Robin Amundson Date: Sat, Jul 4, 2020 3:17 PM Cc: Subject:[SnoVARC] Real life Em Comm So...there is no substitute for analog RF. Fortunately the Hytera repeater has analog and digital. It will be much more reliable. With digital we can get all our techs on the air talking around the world quicker and cheaper than HF. We can create our own programmed rules for use to keep our analog frequency clear and available at all times to preserve and protect our analog service. Happy Independence Day my ham friends! 73, Robin, WA7CPA
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Re: Real life Em Comm
Robin Amundson
Clallam County 911 was been advised of the situation. Ham is slowly progressing down the mountain and things are looking good.
Robin, WA7CPA
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Re: Real life Em Comm
Peter Marchel
Thank you for sharing Robin.
Peter & Ann
Peter M Marchel 206.940.5992 KJ7GHW
From: snovarc@snovarc.groups.io <snovarc@snovarc.groups.io>
On Behalf Of Robin Amundson
Sent: Saturday, July 4, 2020 3:17 PM To: snovarc@snovarc.groups.io Subject: [SnoVARC] Real life Em Comm
Just got my DMR digital/analog radio on the air. Set it to scan the analog stations, lol. Immediately picked up a backpacking injured ham giving his information to another ham who had been on the QSO from the beginning. I do not know the
location because I hadn't started in time, but the other ham has it and is going to continue monitoring. Injured ham will attempt to get down mountain on his own but asked for Search and Rescue to be called by a certain time and date if he doesn't get out.
This weekend is a good time to keep scanning 146.52. A lot of hams are on mountains. This guy had no cell service but beautiful analog RF. Injured ham will attempt to call on 146.52 at standard intervals if there is service while he moves.
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Real life Em Comm
Robin Amundson
Just got my DMR digital/analog radio on the air. Set it to scan the analog stations, lol. Immediately picked up a backpacking injured ham giving his information to another ham who had been on the QSO from the beginning. I do not know the location because I hadn't started in time, but the other ham has it and is going to continue monitoring. Injured ham will attempt to get down mountain on his own but asked for Search and Rescue to be called by a certain time and date if he doesn't get out. This weekend is a good time to keep scanning 146.52. A lot of hams are on mountains. This guy had no cell service but beautiful analog RF. Injured ham will attempt to call on 146.52 at standard intervals if there is service while he moves.
So...there is no substitute for analog RF. Fortunately the Hytera repeater has analog and digital. It will be much more reliable. With digital we can get all our techs on the air talking around the world quicker and cheaper than HF. We can create our own programmed rules for use to keep our analog frequency clear and available at all times to preserve and protect our analog service. Happy Independence Day my ham friends! 73, Robin, WA7CPA
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Re: Best software to find bearing
Thanks, Dale. That's a great site.
-- ************************* Howard E. Mahran WA1HEM (425) 864 - 5104 *************************
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Re: Best software to find bearing
Dale Smith <dale_smith@...>
I find this site interesting.
https://www.fcc.gov/media/radio/distance-and-azimuths
Regards, Dale Smith 425-686-9304 LinkedIn: linkedin.com/in/dalegsmith KJ7GHU
Reclaim your life and delete FaceBook!
From: snovarc@snovarc.groups.io <snovarc@snovarc.groups.io> On Behalf Of Howard E. Mahran / WA1HEM
Sent: Friday, July 3, 2020 3:15 PM To: snovarc@snovarc.groups.io Subject: [SnoVARC] Best software to find bearing
I'm setting up a small 440mhz 7 element yagi and would like to find the compass bearings to several "targets". I don't see a bearing on google maps. What do folks recommend?
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Re: Best software to find bearing
Perfect. Thanks all. Paul you were very close - 206*
-- ************************* Howard E. Mahran WA1HEM (425) 864 - 5104 *************************
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Re: Best software to find bearing
Cougar Mt Antennas with Goggle Earth Thanks, Rowland
On Fri, Jul 3, 2020 at 5:17 PM Howard E. Mahran / WA1HEM <wa1hem@...> wrote:
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Re: Best software to find bearing
Paul Butzi (W7PFB)
47-32-39.0N 122-06-30.0W RX @ ~300' and TX @ ~100’ AGL
-p W7PFB
73, Don’t forget to smile and have fun!
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Re: Best software to find bearing
Thanks Paul and Kirt-
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What Are the coordinates of the cougar mountain repeater? I was thinking it was nearly due south of Duvall but I’m not sure Excuse my typos - sent via my thumbs or by voice from a mobile device
On Jul 3, 2020, at 4:53 PM, Paul Butzi (W7PFB) <w7pfb@...> wrote:
--
************************* Howard E. Mahran WA1HEM (425) 864 - 5104 *************************
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Re: Best software to find bearing
Paul Butzi (W7PFB)
I grit my teeth and use Google Earth Pro.
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I make it a bearing of 204 degrees and a distance of about 14.8 miles. That’s to a point just a bit east of Duvall, I’m not real clear on exactly where Howard’s house is. But that bearing ought to be plenty good enough for aiming a Yagi.
-p W7PFB
73, Don’t forget to smile and have fun!
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Re: Best software to find bearing
Kirt White / K7KDW
The web version doesn’t have it but if you download the Google earth app it includes a ruler tool that will give you a bearing. I thought I once did this with Gaia GPS but I couldn’t find it there last time I looked.
Kirt
On Jul 3, 2020, at 3:15 PM, Howard E. Mahran / WA1HEM <wa1hem@...> wrote:
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Best software to find bearing
I'm setting up a small 440mhz 7 element yagi and would like to find the compass bearings to several "targets". I don't see a bearing on google maps. What do folks recommend?
Thanks and have a happy safe 4th! 73, Howard -- ************************* Howard E. Mahran WA1HEM (425) 864 - 5104 *************************
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