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ID this please
Posted: Tue Aug 01, 2017 9:13 pm
by regulaterz
hi never seen something like this before my be because i have bean out the scene for ages .and tech has improved tenfold .but seen it up for sale was thinking of buying it
unsure of wattage or how to program it but see it for sale on a home brew site just have to state Frequency when ordering
http://i.picresize.com/cozS
Re: ID this please
Posted: Wed Aug 02, 2017 3:31 am
by Albert H
It's probably good (actually "bad") for about 800mW. Frequency is set by writing code into the 8-pin PIC there. On power-up, the PIC squirts data into the PLL IC to load the frequency information into the registers in the PLL chip. Changing frequency requires that PIC to be re-programmed or replaced.
The construction of the thing is pretty messy. I don't see the need for the two LPF filter coils at the output - they're not going to do much of use, since they can "see" each other, so harmonic attenuation will be insignificant. There's also no screening between stages - this isn't always necessary, but if you're going to make your exciter on the smallest piece of copperclad you can get away with, there really should be some effort to prevent inter-stage coupling and instability.
It appears to be a messy copy of an old exciter design, with poor layout, dreadful soldering and no means of readily setting frequency. The constructor also appears to have received a glue-gun for Christmas!
It's a bodge job!
Re: ID this please
Posted: Wed Aug 02, 2017 9:16 am
by thewisepranker
Come on - I think "insignificant" is a bit harsh. The two collinear coils will still contribute quite an amount of increase in gradient to the filter and a decent amount of rejection. More than if it weren't there, so it's not useless. Not saying you're wrong, far from it.
I think the biggest bodge is the five parallel transistors as an output device.
The PIC probably isn't going to like being so close to the RF output, or anywhere near the high power end. At least it's decoupled.
Re: ID this please
Posted: Wed Aug 02, 2017 10:46 am
by regulaterz
should i just buy one from china lol
Re: ID this please
Posted: Wed Aug 02, 2017 11:01 am
by teckniqs
I was given this similar thing a couple of years ago, no idea who built it but looks familiar.
Re: ID this please
Posted: Wed Aug 02, 2017 2:46 pm
by regulaterz
almost twins big up the glue gun massive lol .
Re: ID this please
Posted: Thu Aug 03, 2017 9:39 pm
by RF-Head
It's a unique electronics board
See the listing on ebay
http://www.ebay.co.uk/itm/Export-60-Wat ... 7675.l2557
Re: ID this please
Posted: Thu Aug 03, 2017 10:14 pm
by bipolar_transistor
This is built by woodstar from this forum, he prints unique electronics.. Also known as woody..
This stuff is shit if I'm honest. The yellow coils act as a doubler and it almost always breaks into self oscillation when slightly untuned. Stay clear and do not buy!!! The exciter is a bad design, its not a copy as albert said as its wrong, the doubler should be one stage later. Honestly its utter crap...
Over the years ive seen many of these sprogging all over the gaff and also seen two raids because of these... remember the laylow fm days!! Them poor guys run these...
Re: ID this please
Posted: Thu Aug 03, 2017 10:49 pm
by Undercover Neckz
Woody's up against some strong competition on eBay
http://www.ebay.co.uk/itm//331976526989
Re: ID this please
Posted: Thu Aug 03, 2017 11:50 pm
by regulaterz
oh dear i brought it thats the one i never got it off ebay ether lol payd more then that for it too
i suppose if i want a hollyday i could run it direct in a caravan in my field .lesson learnt it was from a 3rd party of an ad on another site .actually have dealt with dude before few years back for I.T stuff .so not blaming him got to make a living some way .anything salveigable on it
...and woody stuff cant be that bad surely .
Re: ID this please
Posted: Sat Aug 05, 2017 6:02 am
by thewoodstarr
bipolar_transistor wrote: ↑Thu Aug 03, 2017 10:14 pm
This is built by woodstar from this forum, he prints unique electronics.. Also known as woody..
This stuff is shit if I'm honest. The yellow coils act as a doubler and it almost always breaks into self oscillation when slightly untuned. Stay clear and do not buy!!! The exciter is a bad design, its not a copy as albert said as its wrong, the doubler should be one stage later. Honestly its utter crap..
You mate no nothing of our designs. I suggest you make your own. unique electronics supplies high quality equipment across the Globe. we now are FCC certified, and now certified under R&TTE. You will also see that I have 100% rating. You Sir are a TWAT
bipolar_transistor wrote: ↑
Posted: Sat Aug 05, 2017 6:07 am
by thewoodstarr
You mate no nothing of our designs. I suggest you make your own. unique electronics supplies high quality equipment across the Globe. we now are FCC certified, and now certified under R&TTE. You will also see that I have 100% rating. You Sir are a TWAT
Top
Re: ID this please
Posted: Sat Aug 05, 2017 6:37 am
by thewoodstarr
I have no idear where that driver went out from, it's not us.
Re: ID this please
Posted: Sat Aug 05, 2017 6:41 am
by thewoodstarr
regulaterz wrote: ↑Wed Aug 02, 2017 2:46 pm
almost twins big up the glue gun massive lol .
That is a copy, but not our work. Nothing to do with us.
Re: ID this please
Posted: Sat Aug 05, 2017 6:44 am
by thewoodstarr
regulaterz wrote: ↑Wed Aug 02, 2017 2:46 pm
almost twins big up the glue gun massive lol .
That's maybe a copy but nothing to do with us.
Re: ID this please
Posted: Sat Aug 05, 2017 6:48 am
by thewoodstarr
regulaterz wrote: ↑Wed Aug 02, 2017 2:46 pm
almost twins big up the glue gun massive lol .
That look evil, that is a copy of our drive...
Re: ID this please
Posted: Sat Aug 05, 2017 6:57 am
by thewoodstarr
Albert H wrote: ↑Wed Aug 02, 2017 3:31 am
It's probably good (actually "bad") for about 800mW. Frequency is set by writing code into the 8-pin PIC there. On power-up, the PIC squirts data into the PLL IC to load the frequency information into the registers in the PLL chip. Changing frequency requires that PIC to be re-programmed or replaced.
The construction of the thing is pretty messy. I don't see the need for the two LPF filter coils at the output - they're not going to do much of use, since they can "see" each other, so harmonic attenuation will be insignificant. There's also no screening between stages - this isn't always necessary, but if you're going to make your exciter on the smallest piece of copperclad you can get away with, there really should be some effort to prevent inter-stage coupling and instability.
It appears to be a messy copy of an old exciter design, with poor layout, dreadful soldering and no means of readily setting frequency. The constructor also appears to have received a glue-gun for Christmas!
It's a bodge job!
Mate you saying don't put any filtering on, your a dick bro, that needs it, 170 Watt amp it's going into,,,, a very high gain amp. Donut!
Re: ID this please
Posted: Sat Aug 05, 2017 7:16 am
by thewoodstarr
Mate your a total Twat, you may fool some of the dickheads on here. But not all, You sir should buy all the bits to make a PLL Fm Transmitter, in 5 years when eventually you have made I. I am waiting to see a frigging time traveling machine
Re: ID this please
Posted: Sat Aug 05, 2017 7:24 am
by thewoodstarr
regulaterz wrote: ↑Wed Aug 02, 2017 2:46 pm
almost twins big up the glue gun massive lol .
Someone is copying our boards. badly,,,
Re: ID this please
Posted: Sat Aug 05, 2017 7:25 am
by thewoodstarr