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Author Topic: radio communications  (Read 8074 times)

slidemansailor

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radio communications
« on: September 23, 2012, 11:11:31 am »

Our new neighborhood posse core agreed HAM radio communication would be an excellent idea and put together two classes to help us get our (entry-level) Tech Licenses.

We completed our first of two classes yesterday morning, and the last part of my order for the book, equipment and radio arrived yesterday afternoon.  I'm on track for the tech test Oct 6th and license a week or so thereafter.

The radio is a Baofeng UV-5R tri-band commercial FM (65MHz-108MHz), VHF (136MHz-174MHz), UHF (400MHZ-480MHz).  I would like to start listening to interesting stuff soon. I want incentive to wander the waves and learn to use my radio while I bide my time.  I will be mute until I am licensed or TEOTWAWKI, whichever comes first.  It is a bit of a race right now, but I'm betting on the license winning this round.

Oh yeah. so is there a chat or two I might seek out that includes some friends from TMM?
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Hutch

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Re: radio communications
« Reply #1 on: September 23, 2012, 11:57:44 am »


Read the book and then....

Google " Free Ham Radio Practice Tests " for practice.

The questions are the same Q's on the test.

Take multiple tests for different Q's.

Good Luck,

Hutch
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Bear

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Re: radio communications
« Reply #2 on: September 23, 2012, 12:35:33 pm »

Excellent idea.  My wife and I recently joined CERT (Community Emergency Response Team).
Good folks, but radio-challenged. I see part of my job to be "Bringing radio to thems that need it."
(Apologies to Shepherd Book)

Bear
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slidemansailor

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Re: radio communications
« Reply #3 on: September 24, 2012, 07:22:25 am »

The Boise area, aka "The Treasure Valley", has a couple of ham clubs with repeaters providing access to a much bigger world.  They report handhelds getting to the Pacific coast and numerous locations similar distance.  I kind-of grok the concept, but will have to play a bit before I get the map and packet-passing in my head.

They did mention that Reno is a hop-skip-jump away, so I'm sure there will be connections once I have a handle on using them ... oh yeah, and the certificate of entry.
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slidemansailor

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Re: radio communications
« Reply #4 on: September 24, 2012, 07:25:51 am »

What I'm keen on doing over the next few weeks, is learning to listen to broadcasts, getting a feel for the culture and an impression of the network.  Our lead instructor talks about a regular chat group out of California that has a, I think, weekly date/time for a chat on prepping issues. I'll probably track that information down and start listening for the practice - not to mention the information.
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Bear

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Re: radio communications
« Reply #5 on: September 24, 2012, 01:58:11 pm »

What I'm keen on doing over the next few weeks, is learning to listen to broadcasts, getting a feel for the culture and an impression of the network.  Our lead instructor talks about a regular chat group out of California that has a, I think, weekly date/time for a chat on prepping issues. I'll probably track that information down and start listening for the practice - not to mention the information.

When you get the time and frequencies, post them here. I'll see if I can hit it from this end.

Bear
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Moonbeam

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Re: radio communications
« Reply #6 on: September 24, 2012, 03:40:56 pm »

Yay! I'm so glad that someone finally started a thread like this!!!!!  :wav:
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clarence

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Re: radio communications
« Reply #7 on: October 04, 2012, 08:36:13 pm »

tesla antenna

an interesting antenna explained.

clarence
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Bear

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Re: radio communications
« Reply #8 on: October 05, 2012, 03:32:48 pm »

tesla antenna

an interesting antenna explained.

clarence

Huh. The next step would be to have 2 ham radio operators try to communicate by Tesla
antenna, on several bands.

Things I would like to know from that test:

1. Does band matter much, or are all bands the same in this mode?
2. Does the length of the metal rod matter, or just that it's a ground?
3. Can a third operator with a conventional antenna receive the signal?

Bear
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phjg777b

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Re: radio communications
« Reply #9 on: October 06, 2012, 03:55:05 pm »

I read that article a few days ago and it looks interesting.

Being an "Extra" class ham doesn't mean I know it all, but I can answer your 3rd question.
If you are able to transmit at all with that Tesla Antenna, an operator with a conventional antenna WOULD be able to receive. Provided of course that he is within range. The transmission isn't being sent from point to point through the ground but using the local ground as the radiator.

I would be curious about what kind of takeoff angle it would be, and therefore what range to expect. Seems that it would be very much in line with "NVIS" and not something for very long distances. Which is fine too depending on what your needs are.
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slidemansailor

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Re: radio communications
« Reply #10 on: November 10, 2013, 06:51:37 pm »

I started this thread from SW Idaho as a newly minted Technician knowing almost nothing about amateur radio.  Thanks to Moonbeam pointing me back at it, I will resurrect it now that I am a newly minted General knowing almost nothing about amateur radio.

This time, however, I will be expanding out of my little sandbox into the longer-reaching HF bands.  I have yet to get even my 2-meter "base station" radio up and am already promised one loaner and another gifted radio to add to my collection.  I have a pile of copper wire and will be working on this soon.
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Bear

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Re: radio communications
« Reply #11 on: November 10, 2013, 08:41:11 pm »

slidemansailor,

Why not post your lats and longs for the base /destinations here instead of the
general thread, so it can be easier to track. I'll put together some images showing
the MUF/LUF and we can start that discussion.

If you are uncomfortable revealing your own qth, I will show some slides I put together
in preparation for the last Field Day. The issues will be the same, they will just be specific
for where I am, not where you are.

Bear
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slidemansailor

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Re: radio communications
« Reply #12 on: November 10, 2013, 08:48:44 pm »

What the heck, NSA, CIA, The Pentagon the executive branch and everybody else already has my name and location in the crosshairs... I might as well share it with friends.

45.905748 and longitude -114.074789
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Bear

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Re: radio communications
« Reply #13 on: November 10, 2013, 09:23:47 pm »

What the heck, NSA, CIA, The Pentagon the executive branch and everybody else already has my name and location in the crosshairs... I might as well share it with friends.

45.905748 and longitude -114.074789

Well, ok. I'll use your QTH and some of the destinations I had in mind for examples.

Give me a bit.

Bear
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Bear

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Re: radio communications
« Reply #14 on: November 10, 2013, 09:35:18 pm »

Ok, here we go. First thing is to post is a color scale that shows signal strength.
The left side is poor, and the right side is excellent. I used 100 watts as the
power output, as that is pretty typical for most common HF units out there.
If you need more than that, either you buy a high end rig or run you signal
into an amplifier to boos it.

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