ATV on 6cms - It's Cheap and Easy on 5665MHz

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g6urm
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Joined: Mon Apr 23, 2018 2:57 pm

Re: ATV on 6cms - It's Cheap and Easy on 5665MHz

Post by g6urm » Tue Apr 24, 2018 4:19 pm

and we have lift off - first ever 5.6 ghz transmission @ 4 ;30 pm ....................... all 10 foot of it across the room :lol: :lol: :lol: - well we all gotta start somewhere - impressed with the pics from these tiny cameras ........................

right tea time - have a good night all
NO idea is too crazy so long as one fool believes they can make it work

g8vpg
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Re: ATV on 6cms - It's Cheap and Easy on 5665MHz

Post by g8vpg » Tue Apr 24, 2018 6:57 pm

You’re making good progress. The picture quality is surprisingly good. The frequency we use is 5665. The TX I have is the 1W output one, which has a little fan in it and runs cool. Some of the earlier 300/600mW ones got quite hot. The sma connectors are these horrible reverse polarity types, but you can get an adapter on ebay.
73 Shaun G8VPG.

G8DKC
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Joined: Thu Jun 28, 2012 9:39 am

Re: ATV on 6cms - It's Cheap and Easy on 5665MHz

Post by G8DKC » Tue Apr 24, 2018 9:54 pm

Glued the small cheaper camera to a 3 x AA battery pack...

Has it's own off on switch, eBay item number : 112764117513

Normally use a Tarot for testing, but this is so simple, no need for regulator as only 4.5v.

Only short transmissions as still gets warm, glue softens :-) as for battery life, this is the first set fitted.

Peter
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g6urm
Posts: 40
Joined: Mon Apr 23, 2018 2:57 pm

Re: ATV on 6cms - It's Cheap and Easy on 5665MHz

Post by g6urm » Wed Apr 25, 2018 6:19 am

easy - they said .................. arrrgh ......... RP - SMA - i have some of those I said ................... in my large collection of plugs and bits acquired over 30 odd years ............. AH nope everything BUT - oh well off to flea bay -adaptors to get it the "right " way round - 2 for £2.49 - order x 4 -note advert says we have sold 1000 + ....................... all to FRUSTRATED ATV'ERS no doubt :lol: :lol:

why in gods name did they go for such a plug /socket - whats wrong with standard SMA ??? :evil: :evil:
NO idea is too crazy so long as one fool believes they can make it work

g8vpg
Posts: 326
Joined: Fri Oct 11, 2013 9:35 am

Re: ATV on 6cms - It's Cheap and Easy on 5665MHz

Post by g8vpg » Wed Apr 25, 2018 10:04 am

I believe the RP connectors were developed for modem/routers to stop people adding high gain aerials to them to extend their range. G6URM - would you mind telling us your name, it makes things a bit friendlier here.
73 Shaun G8VPG.

G8PEF
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Re: ATV on 6cms - It's Cheap and Easy on 5665MHz

Post by G8PEF » Wed Apr 25, 2018 10:43 am

If anyone is interested, I have a couple of 5.7GHz flat panel antennas (new, but unboxed and might be a bit dusty) which have the same performance figures as the TP-Link outdoor wifi antennas - they (unlike some others) are specced to operate across the 6cm amateur band at about 23dBi gain.

If I can lay my hands on them before weekend, I'll probably take them up to Norbreck - If anyone is going, and is interested in them, come and seek me out on the Bolton Wireless Club stand :)

73
John
G8PEF

g6urm
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Re: ATV on 6cms - It's Cheap and Easy on 5665MHz

Post by g6urm » Wed Apr 25, 2018 11:36 am

ah yes sorry - my bad - the name is BRETT - location is Plymouth and I'm 61 years young .lol - I used to be RK for gb3wv and wd at one time when they where up on Dartmoor :oops:
NO idea is too crazy so long as one fool believes they can make it work

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Wolfie G8VAT
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Re: ATV on 6cms - It's Cheap and Easy on 5665MHz

Post by Wolfie G8VAT » Wed Apr 25, 2018 11:49 am

I might give you a looking up Geoff, having seen everyone else's neat and proper set ups, my Dish and Bishops crook is well erm.. embarrassing... :D
:
Dah-di-dah
:
Graham G8VAT

g6urm
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Joined: Mon Apr 23, 2018 2:57 pm

Re: ATV on 6cms - It's Cheap and Easy on 5665MHz

Post by g6urm » Wed Apr 25, 2018 6:13 pm

https://www.wifi-shop24.com/GOLD-Wirele ... door-30dBi - just ordered one of these - which should give me some reasonable gain figures to play with ** :lol: - so I guess i'm going down the single antenna - relay route with this project - any advice on what relays to look out for please gents ? - and what to avoid ...................

** using this calculator - http://www.csgnetwork.com/antennaecalc.html - ok this is "best case " of course

now type in 400 w and see what you get ............................ go on you know you want to ( drone death ray time .lmro ) :lol: :lol: :lol:
NO idea is too crazy so long as one fool believes they can make it work

g8vpg
Posts: 326
Joined: Fri Oct 11, 2013 9:35 am

Re: ATV on 6cms - It's Cheap and Easy on 5665MHz

Post by g8vpg » Wed Apr 25, 2018 6:37 pm

Brett,
If you look at my post 21 December, page 5 of this thread, you can see the relay that most people use. These are specified to 26GHz and are commonly seen at rallies for £15-25. The new cost is silly money. The cable used is 0.141 inch diameter semi-rigid microwave cable, RG402 I think from memory. The relays are often 28V operated, but there is a simple circuit that allows them to work on 12V. See the BATC wiki page.
73 Shaun.

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