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Cheers Doug thanks so you think even if the motors state 6v they should run be able to run 12v then if needed
5 minutes ago by 🇬🇧 georgeo5664 ( Petty Officer 1st Class)
RC & Electrics
13 Posts 6 Likes
Started 23 hours ago
Latest 5 minutes ago
Motor, speed controller
"P.P.S. You might want to consider a clover-leaf aerial. That enables what they call 'circular polarity' transmission, which is really useful for drones when the transmitting aerial is performing contortions in the air. For boats, a vertical aerial pumping out vertically-polarised waves may suffer from 'bounce' off the water surface, which turns the reflected waves horizontal. But these are very cheap anyway, and can be experimented with"
Yes I'd noticed the clover leaf. Not the most efficient antenna but agree it's a nice compact design. Agreed the reflections can cause some polarisation distortion.
A vertical antenna (properly earthed) also produces a ground wave propagation which travels especially well over water, but admittedly not so long range at 5.8Gigs. Works best at lower frequencies where the absorbtion rate in water is lower. Those operating in salt water lakes on the coast are better off in this respect than us fresh water sailors!
So I was thinking of using antenna diversity, one vertical and one horizontal.
Just like most 2.4Gig TX/RX sets already do. A vertical stub antenna at the top of the TX case and a horizontal antenna in the handle usually.
Of course if you hold the TX flat on it's back then you are relying on the horizontal antenna component!! At the RX end two 12,5cm wires, one vertical, one horizontal is the counter part.
Works well in my Sea Scout.
For 5.8 Gigs the wavelength is a little less than half that at 5.1688cm so the clover leaf is a reasonable compromise.
Didn't spend my professional life working on all types of radio systems, from VLF/HF through personal mobile and cellular systems up to full COMMS suites with datalinks on naval vessels for nuffink. Some of it stuck! 😉
Having successfully hijacked Ken's thread (Sorry Ken😭) I guess we should continue this discussion (if required) in a new thread! Cheers, Doug 😎
55 minutes ago by 🇩🇪 RNinMunich ( Fleet Admiral)
RC & Electrics
21 Posts 13 Likes
Started 13 hours ago
Latest 55 minutes ago
Thanks. I have taken your advice and success!
Thanks again for the solution.😊
2 hours ago by 🇬🇧 MouldBuilder ( Chief Petty Officer 1st Class)
8 Posts 3 Likes
Started 2 days ago
Latest 2 hours ago
CNC boat kits...?
Sounds like you might not have been waiting long enough for the Arduino to boot and load GRBL, so the port refused to connect, and then just stayed 'busy'....
If it happens again, try opening and closing another port, and then going back to 8. That seems to reset the flag...
4 hours ago by 🇬🇧 DodgyGeezer ( Chief Petty Officer 1st Class)
Hobby Chit Chat
56 Posts 19 Likes
Started 4 months ago
Latest 4 hours ago
In your My Account page you can turn off all notifications. If you want to close your account completely, please use the support page. Thanks
11 hours ago by 🇬🇧 Fireboat ( Warrant Officer)
2 Posts 0 Likes
Started 11 hours ago
Latest 11 hours ago
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by figtree7nts ( Commodore) 🇺🇸
173 Posts • 271 Likes • 2 hours ago
HMS Cottesmore in 1/48 scale.
by Martin555 ( Master Seaman) 🇬🇧
4 Posts • 13 Likes • 9 hours ago
by Jerry Todd ( Chief Petty Officer 2nd Class) 🇺🇸
31 Posts • 154 Likes • 1 day ago
by MouldBuilder ( Chief Petty Officer 1st Class) 🇬🇧
8 Posts • 24 Likes • 2 days ago
Emily James SF 33 Trawler
by GrahamP74 ( Warrant Officer) 🇬🇧
3 Posts • 5 Likes • 2 days ago
The Vosper 46” RAF Crash Tender Kit By Vintage Model Works
by mturpin013 ( Sub-Lieutenant) 🇬🇧
51 Posts • 438 Likes • 4 days ago
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Fairacre broads cabin cruiser
3 hours ago by jbkiwi
Pilot Boat Trial
2 hours ago by MouldBuilder
2 days ago by JOHN
3 months ago by Puddle-pirate
Hellenic Navy - La Combattante IIIb class Fast Attack Craft
I have really enjoyed building this little boat. The painting, as always, I found a challenge. I am really pleased with the performance and the finished result. It has taken me around six months to build only being able to fit time in around a busy work schedule. Looking forward to the next one now.
2 hours ago by MouldBuilder
This is a coastal patrol ship that practically designed its self.
I had some plastic card and I just wanted to make something, I hade no plans or drawings and this was the end result.
This was made using my baking paper tip.
I never got around to installing rc equipment in it as a friend decided that he wanted it as it was.
And I never got took any photos of the making of it.
9 hours ago by Martin555
DF's maiden voyage went well yesterday, despite hardly any breeze at all. Myself and fellow club member Colin who was re-tuning his Graupner RG-65 had a lovely time cruising around our club water, trying to find the best of the rare breaths of wind. Mine is the white boat with clear white sails
1 day ago by rolfman2000
Maersk Master, scale 1/50.
Dimensions, 168x38cm, weight 54kg
1 main pitch controlled propeller (100mm) 2 azimuth thrusters (50mm) and 2 bow thrusters(44mm).
Full function, winches, towing pins, lights, fifi, radars,
2 days ago by maersk-topper
I just thought I would post some photos of my HMS Cottesmore.
She is still a work in progress.
I have been working on her for about three years now.(in between other projects)
I purchased the hull And running gear from Fleetscale.
Everything else has been made by myself using odds and ends, bits and pieces including yogurt pots and a lot of LED's
I have a few more years work to do before she is completed, lots more bits to make.
5 days ago by Martin555
im told its a american harbour tug but have no proof
6 days ago by nutrunner
First run in 15/20 years not to bad
6 days ago by billhook301
I just thought I would post a few photos of a little tug that I made some time ago.