Have you considered the 6m band? It has a mix of HF & VHF propagation aspects. It might provide a more reliable connection at that distance.
Hi... Sorry for the delay...
my best analogy for Troposcatter, is that if you look at the really high power searchlights that are used to advertise various things (car dealership sales and such) , the beam sweeping across the sky is visible even though you aren't line of sight with the transmitter... Just think of radio waves instead of light.
Another analogy is when looking at the sky when approaching a city, you can usually see the sky being brighter because of all of the light that is being bounced around in the atmosphere, even though you aren't able to see the city itself yet.
NVIS depends on the upper atmosphere being ionized, and the frequencies that you can use change both between day and night (usually), and what the sun has been doing, sometimes it just isn't possible to use NVIS.
When you plan your system, give yourself a few Db extra gain to make up for unforeseen problems.
I hope it helps.
Thanks
Joel
Have you considered the 6m band? It has a mix of HF & VHF propagation aspects. It might provide a more reliable connection at that distance.
Makes sense, good analogy. Yeah, I do understand it is mostly reflected power with a very poor power factor. Just seemed pretty practical.
Not sure about less costly, as most modern HF rigs come with 6m capability. The antennas are smaller/shorter than HF, but a little larger than higher frequency VHF.I haven't begun to explore the 6m band yet no. I will look into this more, is the hardware less costly to break into the band?
.
.
Oh my Goodness !
Poor Galaxy Mule (love that name btw !) ---you just wants to talk to your family 150 miles away--- and people are suggesting such exotic's as high power UHF sideband, tropo ducting, maybe even scatter ( like the White Alice networks of the Cold War- era DEW Line, maybe ?? )
So, I'm going to throw my 2 cents into this pot .
--------------------
First off, as a simple network of just you and your parents, sans any repeater system (150 miles even with a good repeater is iffy)-- forget V/UHF.
Yes, as you all gain experience and sink lots of money into the project, scatter, tropo, brute force stuff--- heck, even satellites and moonbounce are possible, but Honey, right now forget those venues. You and your family all need to get General Class licenses and think High Frequency radios.
___________________________________________
For years I and colleagues have set up HF stations for work situations all over the world. They are easy and very effective if you just pay attention to some details.
Like -- modes?----------- 150 miles ? Use Sideband
frequencies ? -----150 miles ? easy peasy-- you can cover that day or night with 60 meters, though any frequency between 1.8 to 8MHz will work fine. Professionally we used the 5 and 8 MHZ bands all the time with virtually a 100% assurance we could talk anywhere within a 600 mile radius.
antenna(s)------- at these frequencies you can use low elevation terminated long wires, or terminated folded dipoles (TFD) for
near vertical wave (NVIS) - they are very simple antennas, though not the most efficient- they are practically fool proof and work 'right out of the box' (no tuning necessary.) I have thrown dozens of them up- from guy'd 20 foot masts planted in snow at the Poles to palm trees in the pacific--and they always worked.
____________________________________________
An aside-
Today I regularly chat with girl friends on 40 or 60 meters. I am in central Colorado, one is in New Mexico, the other southern Utah. The circuit is 100%, --day or night... we use 100 Watts; I have a 25 foot loaded vertical antenna, - they use TFD's.
_____________________________________________
I think your biggest challenge would be getting everyone on HF---ie: everybody getting General Class licenses. The stations will set up easily. Just keep it all simple
Good luck Cowboy, and continue to ask questions--- Heaven know, there are plenty of ideas out here ! .
Lauri
.View attachment 119404
part of the "White Alice" 900MHz , zillion-watt scatter system (defunct)
(Note the two antennas - for perfect fade free diversity reception !......... this system covered hundreds of miles over the horizon)
View attachment 119405
Not sure about less costly, as most modern HF rigs come with 6m capability. The antennas are smaller/shorter than HF, but a little larger than higher frequency VHF.
There is no 100% guaranteed way to do what you seek; you have to decide your cost vs. reliability limit. Lauri's suggestion is good, but keep in mind that those lower end HF freqs are the first to get wiped out by solar storm activity, and you are out of ground wave coverage.
This has been quite the read....
Go HF...only one of your parents has to have the General class license and be in the room while the non licensed parent is operating...the control operator concept talked about in the General class exam.
100w and dipoles at a reasonable height and you are good to go...it will take some trial and error to find a good freq to use, but that is half the fun.