Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

donate to eham
   Home   Help Search  
Pages: [1] 2 Next   Go Down
  Print  
Author Topic: Communications in The Woods  (Read 2730 times)
KD6OJG
Member

Posts: 69




Ignore
« on: March 27, 2018, 10:04:57 PM »

I hope this doesn’t sound like an off the wall question but I’d like people’s opinions on what would be good communication devices to use in the forest.  And just to let you I’m talking about communicating with multiple people and being deep in the woods and very far from civilization.  Are those walk-in talkies any good? I know they operate around 462/467 mHz.

And let’s say you want to have a base station and several portable devices

There are a lot of tv programs on cable that have people in the woods but they never focus on their communication equipment.

« Last Edit: March 27, 2018, 10:19:32 PM by KD6OJG » Logged
K0UA
Member

Posts: 4372




Ignore
« Reply #1 on: March 28, 2018, 02:40:26 AM »

I can't possibly see how anyone could respond to your question with any useful information as you don't provide any useful data to formulate a response from. Not to be a smartass, but yes, that is an off the wall question.  I would actually like to help answer you questions if you would insert some specifics into your question. Engineering type nerds like myself think in terms of specifics not generalities.  Asking if walkie talkies are any good is like asking if bacon is any good.

I could sit back and take a WAG (wild assed guess) at what you are trying to accomplish, but that would be all that it would be. Specifics please.  Type of forest, (what type of trees, conifers, decidious etc.)  How high is the base station support, and will it be at a high point or low point in the average terrain, How far are you trying to communicate.? 100 yards, a mile? 10 miles, 100 miles? Describe the average terrain, (rolling hills, valleys, mountains, )  In other words, how flat is the terrain?  And last but not least is how much money do you have?
Logged

73  James K0UA
ARRL Missouri Technical Specialist
W8JX
Member

Posts: 13268




Ignore
« Reply #2 on: March 28, 2018, 03:18:26 AM »

I hope this doesn’t sound like an off the wall question but I’d like people’s opinions on what would be good communication devices to use in the forest.  And just to let you I’m talking about communicating with multiple people and being deep in the woods and very far from civilization.  Are those walk-in talkies any good? I know they operate around 462/467 mHz.

And let’s say you want to have a base station and several portable devices

There are a lot of tv programs on cable that have people in the woods but they never focus on their communication equipment.



UHF/460 mhz does not do well in heavy woods. VHF does better but no legal over the counter devices for non licensed use. When looking at various 2 way 460 mhz radios pay attention to size of antenna on them. Choose ones with largest antenna or that can accept a larger after market antenna in looking for max range in woods. Even then you will be lucky to get much past 1 mile reliably. In open areas several miles is not hard to do. If you have a base or control operator, placing them on high ground relative to others will help a lot. On UHF height is a game changer in woods.
Logged

--------------------------------------
Ham since 1969....  Old School 20wpm REAL Extra Class..
W4KYR
Member

Posts: 1799




Ignore
« Reply #3 on: March 28, 2018, 04:29:55 AM »

Good old fashioned CB radio would be great in the woods, the radios are cheap and plentiful.
Logged

The internet and cellphone networks are great until they go down, what then? Find out here. 
https://www.eham.net/ehamforum/smf/index.php/topic,111948.0.html

Using Windows 98 For Packet...
W8JX
Member

Posts: 13268




Ignore
« Reply #4 on: March 28, 2018, 05:21:16 AM »

Good old fashioned CB radio would be great in the woods, the radios are cheap and plentiful.

Not as a hand held device though
Logged

--------------------------------------
Ham since 1969....  Old School 20wpm REAL Extra Class..
KG4RUL
Member

Posts: 3354


WWW

Ignore
« Reply #5 on: March 28, 2018, 05:28:30 AM »

Good old fashioned CB radio would be great in the woods, the radios are cheap and plentiful.

Not as a hand held device though

CB HTs are not that rare:

Uniden PRO401HH 40 Channel Handheld CB Radio

COBRA HHRT50 HANDHELD CB RADIO WITH NOAA WEATHER

Midland Handheld 40-channel CB Radio
Logged
W8JX
Member

Posts: 13268




Ignore
« Reply #6 on: March 28, 2018, 06:04:08 AM »

Good old fashioned CB radio would be great in the woods, the radios are cheap and plentiful.

Not as a hand held device though

CB HTs are not that rare:

Uniden PRO401HH 40 Channel Handheld CB Radio

COBRA HHRT50 HANDHELD CB RADIO WITH NOAA WEATHER

Midland Handheld 40-channel CB Radio

And the antennas on them are little more than negative gain leaky dummy loads too. One reason UHF (and VHF mostly too) HT's can work so well at times is that compact efficient antennas are possible for those frequencies.
Logged

--------------------------------------
Ham since 1969....  Old School 20wpm REAL Extra Class..
K5PS
Member

Posts: 498




Ignore
« Reply #7 on: March 28, 2018, 06:48:46 AM »

When I was in the Boy Scouts I was given permission to bring my HF radio gear to summer camp in the Adirondacks. They allowed me to set it up in one of the administration buildings and I put up a half-size G5RV in the trees that was no more than 20-30 feet off the ground.

Worked great, but then again it was during a solar max so you didn't need much to be heard.
Logged

All generalizations are false
W8JX
Member

Posts: 13268




Ignore
« Reply #8 on: March 28, 2018, 08:09:03 AM »

Worked great, but then again it was during a solar max so you didn't need much to be heard.

What is best for "sky wave" vs "ground wave" are two different needs.
Logged

--------------------------------------
Ham since 1969....  Old School 20wpm REAL Extra Class..
AA4HA
Member

Posts: 2630




Ignore
« Reply #9 on: March 28, 2018, 08:56:32 AM »

I would suggest the MURS VHF frequencies. The power limit is 2 watts and there are five channels.

https://en.wikipedia.org/wiki/Multi-Use_Radio_Service

You can even string up an antenna 60 feet off the ground in a tree for a temporary base station using a portable.
Logged

Ms. Tisha Hayes, AA4HA
Lookout Mountain, Alabama
N9AOP
Member

Posts: 1154




Ignore
« Reply #10 on: March 28, 2018, 10:54:18 AM »

I have done comms exercises with SAR groups in the wooded areas using VHF; UHF; and 800 interop frequencies.  Much depends on the density of the woods, whether foliage is present on the trees and the type of trees.  Pulling an antenna at the end of coax up into the canopy is a big help buying you more range.  Certain pine trees will attenuate a UHF signal big time.
Art.
Logged
KC8KTN
Member

Posts: 1892


WWW

Ignore
« Reply #11 on: March 28, 2018, 11:17:26 AM »

I can not BELIEVE I read above that said buy a cb radio.I am in shock stop the presses..Have a wonderful day and a Joyous Day. 10-4.  1973s
Logged
K9MHZ
Member

Posts: 1725




Ignore
« Reply #12 on: March 28, 2018, 11:47:34 AM »

Feb 2018 QST had an article on trees and antenna gain, I think.
FWIW.
Logged
K9MHZ
Member

Posts: 1725




Ignore
« Reply #13 on: March 28, 2018, 11:53:32 AM »

Another thing... don’t/didn’t railroads and logging companies use 6 meters (their allocation) for these reasons of propagation and trees/foliage absorption?  Kenwood still sells a beast of a rig that is easily moved to our 6m allocation.
Logged
N8EKT
Member

Posts: 687




Ignore
« Reply #14 on: March 28, 2018, 07:40:16 PM »

depends on what range you need.
GMRS works well for LOS under a mile
MURS would have slightly better range
6 meters would likely give the longest range coverage especially when non LOS
Logged
Pages: [1] 2 Next   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!