472 - 479 khz

[doctor]

I wonder when some kit builder will come out with a xcvr for the new band allocation..EUROPE seems to be faster than us, starts on JANUARY 1st in most countries.

It was a good band while in the COAST GUARD, but we ran around 500 watts from the ship, worked across the PACIFIC a lot, and from the North Atlantic to BOSTON etc.

Maybe at 1 watt we can get the next state over...wait and see.

DOCTOR

 

[Watergate]

Wouldn't a full wave loop be something like 2100 feet for this band?

 

[BJ radionut]

Wouldn't a full wave loop be something like 2100(2129') feet for this band?

Flat top Dipole would be 1000ft overall...give or take a "few inches":w00t:
Wow if a used the entire outside edges of my lot....
I can get up a bent dipole
All the Best
BJ

 

[Captain Kilowatt]

Flat top Dipole would be 1000ft overall...give or take a "few inches":w00t:
Wow if a used the entire outside edges of my lot....
I can get up a bent dipole
All the Best
BJ

By the time I could manage to put up a dipole I would be the one that was bent out of shape. It was enough the time I had my 160m dipole.

 

[W5LZ]

Hm... Live anywhere close to a railroad siding, use the tracks? Loading coils six feet long out of #28 wire on a 160 meter dipole? All things considered, I think I'll pass. Then again, wonder if I could make a mobile antenna...
- 'Doc

 

[Watergate]

Then again, wonder if I could make a mobile antenna...
- 'Doc

I am now picturing a vehicle with a 20 foot tall pink antenna.

 

[Captain Kilowatt]

It sure beats the 2200m band down at 137 KHz.

2200-meter band - Wikipedia, the free encyclopedia


http://members.shaw.ca/ve7sl/136.html

 

[KingCobra_CDX882]

Very Interesting

 

[Watergate]

It sure beats the 2200m band down at 137 KHz.

2200-meter band - Wikipedia, the free encyclopedia


http://members.shaw.ca/ve7sl/136.html

If you were to buy a chunk of land, by the square acre, to put up a full wave loop for this band, you need 81 square acres.

That's assuming a purchase made in full acres per side.

81 square acres of land, a square ring of towers to hold it up, a ring of towers for your 600 meter loop, another ring for your 160 meter loop, lots of transmission line, and a very small ham shack for all your equipment, your framed license, your qsl cards, your bed, and your framed divorce decree.

 

[Captain Kilowatt]

Actually loaded verticals tend to work better with a radial field as good as whatever you can get. You can never get a loop up high enough to work well. It would be pretty much like laying an 11m loop on the ground......maybe even underground.

 

[Se7en]

It sure beats the 2200m band down at 137 KHz.

2200-meter band - Wikipedia, the free encyclopedia


http://members.shaw.ca/ve7sl/136.html

Good read

 

[davegrantsr]

there's a couple of LF books out there, maybe both by RSGB, but there was also 1 back in the 70's, which i still have somewhere. back in high school, in our communications electronics class, a couple of us (who also put 11m xtals in the teachers hw101 heath kit ) built an xmitter based on info in the book. the teacher was impressed. BUT we didn't stop there. all legal aspects were explained, but we upped the power output to almost 5 watts, and the antenna was a LONG wire. a lot longer then legal. don't think we ever had a proper match, but it did get out. it was....AM modulated if i remember correctly. nobody ever responded to our calls, but we did know that it xmitted at least a full mile away . forget the freq we used....it's in the book. i'll have to dig it out some day.
we also built an AM broadcast band xmitter, again exceeding both power output & antenna size. that one broadcast across town, more then a couple miles. also did the same with a ramsey kit quite a while back. that one was heard 7 or 8 miles away.