The US Navy used the ELF to keep in touch with it's nuc boomers. I thought about renting some band width to run my sub while tracking it on the SOSUS network which it now busy tracking whales. Thank you Pentagon for $$ well spent!😂😂😂

Lower frequency RC systems are used for rc submarines because of better water penetration.
Lew

Hi EdW,

I was always told that 27meg and 40 meg were both good for use with r/c submarines, but 2.4gig was not so good as it did not penetrate the water as well.

Bob.

a 27Mhz radio is great for submarines

UK Radio Frequencies.

I moved away from 27meg radio control many years ago due to the small number of frequencies available and that fact that they had to be shared with users of model aircraft, model cars, model boats and even CB radio (anyone remember that?) in the early 1970's.

40 meg radio provided a lot more frequencies to choose from and this was further helped by the allocation of another new frequency for use with all airborne models (35meg) that left the new 40 meg radios for sole use on "ground based" models (including boats)...as well as the existing 27meg radios that remained in universal use.

When 2.4gig radio was introduced, it gave us another improvement in that it did away with any worries about frequency clashes and as they become almost universally used, they removed the absolute need for clubs to display frequency boards with coloured and/or numbered pegs that had to be attached to the appropriate transmitter aerial before the radio could be switched on.

With the majority of (almost all) radio control users now operating with 2.4 gig radio control the older crystal controlled frequencies are now used a lot less and this gives more opportunity for them to be operated relatively freely by their enthusiast followers than ever before when we had so few frequencies to share between us...but the need for vigilance (by checking for other users that may have the same idea at the same time) is still needed as the old "peg boards" no longer exist in the majority of model boat clubs.

27 meg and 40 meg radio control systems (that are kept in good order) still work very well and continue to be used and enjoyed by many - especially those that like to operate with vintage radio control systems.

Older radio control systems can be quite nostalgic to use and enjoy.........and I can quite understand the appeal !

Bob.

I have been using RC for so long now, about 60 years and I have accumulated so many sets, I stay with the old equipment. I have around 20 or so Tx's and more rx's. Futaba and Hitec and Fleet have been good for me and I still use 2ch. 27Mhtz which all still works like it used to and very little competition for frequencies..

Failures are mainly battery connections in the back of the Tx as they corrode with time. But with a little bit of work they can be by-passed with triple A rechargeable. 10 cells will fit in the back where only 8 AA cells were and last longer.

Nothing wrong with the new stuff just no need for me to go there. There are some very cheap electronics in the way of esc's and mixers and especially more powerful standard servos. I use 9 gramm servos for powered boat rudders and the 6 and 7 Kilogram / cm torque standard servos for sail arms.
So one foot in the past and one foot in the future!

Roy

Not really. China is undermining the economies of other countries with their cheap labor. That is pretty much "forcing" the rest of the world to capitulate. The tariffs are meant to level the playing field. As I said the world is a mess. Maybe free countries might have a chance of getting back into manufacturing. (Dumas, did you hear this?)
Lew

Lew are you saying the product is sk good that you would pay double or triple the price?

Correct on the tariff. I would not mind if the China tariffs were doubled or trippled. I don't want to get political but, well, I need to stop here. The world is so F Up so I will concentrate on my RC models.
Lew

Isn’t there a tariff on all products coming out of China? Still even though the equipment is tariffed the price is still lower than North American products?