Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

Ham / GMRS 400-1000mhz PC board antenna PCB LDPA
SurvivalComms Youtube Channel ^ | Jul 29, 2016 | SurvivalComms

Posted on 04/04/2020 8:40:58 AM PDT by tbw2

A versatile ham radio antenna demonstration by SurvivalComms


TOPICS: Business/Economy; Reference
KEYWORDS:

1 posted on 04/04/2020 8:40:58 AM PDT by tbw2
[ Post Reply | Private Reply | View Replies]

To: tbw2

Ham / GMRS 400-1000mhz PC board antenna
https://www.youtube.com/watch?v=VN-jELK0Wq0


2 posted on 04/04/2020 8:41:21 AM PDT by tbw2
[ Post Reply | Private Reply | To 1 | View Replies]

To: tbw2

My gramps has several old Hallicrafters SW radios; an S40B and an S38C.


3 posted on 04/04/2020 8:42:57 AM PDT by SkyDancer ( ~ Just Consider Me A Random Fact Generator ~ Eat Sleep Fly Repeat ~)
[ Post Reply | Private Reply | To 1 | View Replies]

To: tbw2

bkmk


4 posted on 04/04/2020 8:45:04 AM PDT by Buttons12 ( Ready to move on and give the Dems Covfefe-'20!)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SkyDancer

I have an ICOM but lost my license and transmitter caught fire in my backyard.


5 posted on 04/04/2020 8:47:08 AM PDT by 4Runner
[ Post Reply | Private Reply | To 3 | View Replies]

To: tbw2
Very nice. Note that the geometry of the antenna is defined by an angle. This is a characteristic of many types of broadband antennas, and is also interestingly present in the definition of scale- and angle-invariant object models used for image parsing in machine vision

This creates a strange and perhaps very deep connection between radio wave detection in the electromagnetic domain and object detection in the pixel domain.

6 posted on 04/04/2020 8:49:31 AM PDT by Steely Tom ([Seth Rich] == [the Democrats' John Dean])
[ Post Reply | Private Reply | To 1 | View Replies]

To: 4Runner

Was that the same day as your boating accident when trying to turn in your firearms?


7 posted on 04/04/2020 8:53:11 AM PDT by SkyDancer ( ~ Just Consider Me A Random Fact Generator ~ Eat Sleep Fly Repeat ~)
[ Post Reply | Private Reply | To 5 | View Replies]

To: tbw2

The internet topography can run on shortwave.


8 posted on 04/04/2020 9:00:14 AM PDT by kvanbrunt2 (spooks won on day 76)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SkyDancer

LOL


9 posted on 04/04/2020 9:40:14 AM PDT by Vaduz (women and children to be impacIQ of chimpsted the most.)
[ Post Reply | Private Reply | To 7 | View Replies]

To: tbw2

A handy antenna a must have unit.


10 posted on 04/04/2020 9:41:57 AM PDT by Vaduz (women and children to be impacIQ of chimpsted the most.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: kvanbrunt2

In ca the governor booted all the ham band repeaters off the gobmint owned towers


11 posted on 04/04/2020 10:47:37 AM PDT by spokeshave (Trump:....Bernie Sanders is a communist. ...thats gonna leave a Marx.)
[ Post Reply | Private Reply | To 8 | View Replies]

To: tbw2
Very appealing to the casual technically oriented observer.

I wanted to be an ARRL participant even when I was a kid back in the '40s, but things did not work out for it.

Love to have another 50 years to study these things out, but now too old and slow to easily grasp the theory and practice.

Kudos to those who do have the desire and ability! The kind of thinking we need.

Thanks for taking time to post this note, tbw2. Keep on!

12 posted on 04/04/2020 3:09:57 PM PDT by imardmd1 (>Fiat Lux)
[ Post Reply | Private Reply | To 1 | View Replies]

To: imardmd1

Thank you.


13 posted on 04/04/2020 4:14:04 PM PDT by tbw2
[ Post Reply | Private Reply | To 12 | View Replies]

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson