I look at it like this..... I spent time effort and money on a model, I'll be damned if all that goes to waste on a cheap control system.
I use the spectrum dx5e primarily and have a decent futaba 4 channel for anything 27mhz like yachts.
I've had my futaba set since 2002 still flawless to this day and spare receivers are £10 new just have to swap crystals, paid £99 for it.
My spectrum I had since it first came out I think it was 2006, it's a 5 channel 2.4 spare receivers still able to be brought new around £15_20 each. I paid a whopping £180 for it then but now you can get them new £60.
On a side note the dx6 came out a month later and I was fuming at the price drop then but that's sods Law!
I did the initial big spends now I just add a receiver to my build budget so I'm not hiking up my builds to much... I also need to point out some boats get retired, or sold after a year or 2 so I'm not always buying extras I have a small reach of spares. ( I never sell boats with electronics in, accept a servo lol)
My point is clear that just buy something new and you know will work from the box... failures after that can only be laid at your own feet to which you won't be kicking yourself wishing you didnt cheapout out on eBay.
To each their own but it takes me so long to finish projects that I'm not going to risk eBay bargains with my work..
Honestly tho £150 is not that bad of a spent for a new 40mhz 6 channel radio and given 2.4 are taking over its harder to find control systems for boats that require sub surface transitions.
Don't get me wrong a 2.4 set will work fine it 99% of boating applications, providing you can keep the receivers wires above the waterline or the boats just big enough to have that dispacmemt for a signal to reach with out penetrating water...
That said I've not tested the latest 2.4 sets out there but I do expect there to be very improvements especially for boating. It may be worth burrowing a friends 2.4 set and try the sub at a distance ( control test with rescue boat)
And just see if that works... however every sub owner I know tend to lean to the robbe navy f14 just out of pure no messing about. It just comes with a much higher price tag that £150!
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