(9 July 2012, 19:03)Skean Dhude Wrote: They are the same price, what is better the 1340 or the 1380?
They are identical radios just different frequencies.
1340 is 40 meter band ( 7Mhz) which will work NVIS in daylight hours
1380 is 80 meter band ( 3.5Mhz) which will work NVIS at night
(9 July 2012, 20:44)Paul Wrote: Hi NR, hows the back?
NVIS for the unknowing is "ham speak" for Near Vertical Incidence Skywave or low frequency transmitters working from 1.8mhz to 10mhz with vertical or inverted v aerials.
Sort of CB sets working at low frequencies. (CB sets work at 27 Mhz)
Typical modes include morse code and SSB.
You'll need a ham foundation licence to work this and then you are limited to 10 watts.
Problems include:-
Aerials are BIG typically in an inverted v 35' long.
Aerials usually need to be tuned in using an aerial tuning unit.
Both ends need to be working NVIS to achieve reliable communications.
You'll need a ham licence.
and of course if you're working morse, you'll have to learn morse!!!!!!!!!!!
Morse is fun.
It's not quite just learning the code though it's also about the timing i.e.
1. A dot is worth 1 unit (you decide how long that is).
2. A dash is equal to 3 dots
3. The space between parts of the same letter is equal to 1 dot
4. The space between two letters is equal to 3 dots
5. The space between two words is equal to seven dots.
Shall I go on? (Y) -.-- or -. (N)
Would you like the morse code now ? (Y) -.-- or -. (N)
Hi Paul,
Small correction NVIS antennas are indeed long but they are always horizontal-ish They are also low to the ground. Some people rig them just a couple of feet off the deck. Objective is to use the ground as a reflector to send the signal straight up. ( its the signal that's near vertical nnot the antenna)
End fed half waves can therefore be moiunted discreetly along the top pf woode fences. the antennas does not have to be a straight run to work.
(10 July 2012, 18:56)Skean Dhude Wrote: There must be hams all over the place including close to Ken. Perhaps we should find out if anyone from the ham area can help anyone. Do any of our hams know the way to find out about other hams.
Look up local radio clubs and contact them. A face to face meeting will quickly establish the guys who'll help and thaose that'll hinder :-)
(9 July 2012, 23:00)Juice Wrote: 12. Power supplies and charging systems, most likely 12v
Very easy to make permanent magnet motor (fairly cheap too).
http://www.energy-creator.com/the-coil.php
Then use one of those plastic tool boxes to house it, along with a 12v battery winding handle and pulley (make your own).
http://www.youtube.com/watch?v=r0IyjsPTx...r_embedded
Cheers Juice.
Excellent idea Juice.
Isn't it easier to just rig up a car alternator, or better still a 12v dynamo if they can still be had?
LS
(10 July 2012, 19:13)NorthernRaider Wrote: (10 July 2012, 18:56)Skean Dhude Wrote: There must be hams all over the place including close to Ken. Perhaps we should find out if anyone from the ham area can help anyone. Do any of our hams know the way to find out about other hams.
!!!!!!!!!!!! I know how to find a ham near Kenny, we set a trap for one....... A HAMBUSH !!!!!!!!!!!!! 
Good to see that the happy pills are still working NR
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