Interested in getting licensed for your own HF frequencies? Step right in!

[belvdr]

Complexity and points of failure. HF requires ZERO infrastructure whatsoever, not even a satellite. That means that no matter how far apart yapper 1 and yapper 2 are, you only have two devices to troubleshoot. There is a nice simplicity to that.

And the atmosphere. I think that’s where reliability is lost.

 

[mmckenna]

Complexity and points of failure. HF requires ZERO infrastructure whatsoever, not even a satellite. That means that no matter how far apart yapper 1 and yapper 2 are, you only have two devices to troubleshoot. There is a nice simplicity to that.

Financial traders like it because it's speed of light(-ish) directly between points.
Satellite has a longer delay.
IP networks have a longer delay and varying paths.

When stocks are getting traded quickly, those few milliseconds can add up to a lot of money. A direct point to point connection can be worth a lot.

 

[speedway_navigator]

Financial traders like it because it's speed of light(-ish) directly between points.
Satellite has a longer delay.
IP networks have a longer delay and varying paths.

When stocks are getting traded quickly, those few milliseconds can add up to a lot of money. A direct point to point connection can be worth a lot.

Fiber has a VF around 66%, similar to RG-58. I read about those high speed trading firms putting in microwave links from the Chicago bored of trade to Wall street to get milliseconds shaved off an internet based VPN. Who da thunk?

 

[mmckenna]

Fiber has a VF around 66%, similar to RG-58. I read about those high speed trading firms putting in microwave links from the Chicago bored of trade to Wall street to get milliseconds shaved off an internet based VPN. Who da thunk?

Plus all the routing that happens on IP networks. You never know what path your packet will take once it hits the interweb tubes.

 

[AM909]

Financial traders like it because it's speed of light(-ish) directly between points.
Satellite has a longer delay.
IP networks have a longer delay and varying paths.

When stocks are getting traded quickly, those few milliseconds can add up to a lot of money. A direct point to point connection can be worth a lot.

Surprisingly, there was even a movie about it: The Hummingbird Project. It didn't do well.

 

[dlwtrunked]

TT are you coming to IWCE?
Ross Merlin is giving a talk on NVIS.

Ross Merlin (NVIS Communications)

25th March 2024 11:20am - 12:20pm - Ross Merlin a well-known figure in the world of emergency communications interoperability is now an HF radio specialist...

agenda.iwceexpo.com

I'm in Mesa about 1 week a month if you want to do lunch sometime.

Complexity and points of failure. HF requires ZERO infrastructure whatsoever, not even a satellite. That means that no matter how far apart yapper 1 and yapper 2 are, you only have two devices to troubleshoot. There is a nice simplicity to that.

Simplicity? Propagation, solar conditions, etc. might not agree.

 

[riveter]

Simplicity? Propagation, solar conditions, etc. might not agree.

I mean, that's a very very fair point, and I don't discount it.

You and I both know I was speaking in fear of Parkinson's Third Law though, where it intersects technology. An adequate tech spec will know how to add complexity to a system. A GOOD tech spec will know how to remove it. I just hope and pray I can be good enough to not have a complex system failure during my career .

That said, yeah, there's a lot of math and dice rolling that can go into getting HF to work too, so you got me there

 

[TampaTyron]

UPDATE:
The HF freqs were granted earlier this week. I have freqs from 2MHz to 23MHZ, mostly concentrated from 2-8MHz, but then every couple of MHz from 10-23MHz as well. TT