Anyone recognise this driver ?

Intruder · Post by **Intruder** » Wed Feb 18, 2015 8:17 pm

Anyone recognise this board?

Its been mentioned its a 1watt exciter requires 15vdc

Not personally seen it before anyone have any links to the manufactures website please

teckniqs · Post by **teckniqs** » Wed Feb 18, 2015 8:29 pm

It looks like one of the old BW boards from around 15 years ago but don't quote me on that!

...I know someone that will know though but it's a matter of being bothered to ask him for you.

Intruder · Post by **Intruder** » Wed Feb 18, 2015 9:26 pm

Though so but comparing it with a few photos on the net it isnt exactly the same so maybe a upgraded version!

teckniqs wrote:...I know someone that will know though but it's a matter of being bothered to ask him for you.

No change there Tecks

teckniqs · Post by **teckniqs** » Wed Feb 18, 2015 9:46 pm

It could be a copy built by G****, south London....

Haha. Not so long ago I'd have been more than happy to help. Have a great evening.

pjeva · Post by **pjeva** » Thu Feb 19, 2015 11:08 am

It's a copy of BW 1w driver...

Intruder · Post by **Intruder** » Thu Feb 19, 2015 8:08 pm

Well Thanks for info both....

teckniqs wrote:
Haha. Not so long ago I'd have been more than happy to help. Have a great evening.

Oh !

teckniqs · Post by **teckniqs** » Thu Feb 19, 2015 10:33 pm

You know EXACTLY why, bro! Bye x

Intruder · Post by **Intruder** » Thu Feb 19, 2015 11:54 pm

Not really, but fair enough....

RF-Head · Post by **RF-Head** » Fri Feb 20, 2015 8:56 am

Lol it looks like a copy from this picture
I had made a copy of a BW board using a SAA1057
And someone here in Holland made a new layout for it and now again a new copy of my board

Intruder · Post by **Intruder** » Fri Feb 20, 2015 7:53 pm

Thanks for picture RF-HEAD gives me an idea as I bought a few of thoses metal enclosures at a radio rally long time ago and was going to flog them on but I'll keep one for now (or the rest) to house it in. Got a few different sizes but some are the same as the DB6NT transverters if you know what his GHz stuff is like

radio-berlin · Post by **radio-berlin** » Sat Mar 07, 2015 11:50 am

Intruder wrote:Anyone recognise this board?

Its been mentioned its a 1watt exciter requires 15vdc

Not personally seen it before anyone have any links to the manufactures website please

Its shit !!

Wrong values and has no regulators for oscillator, therefore hums around high Levels of RF such as a 100w amp. Also only has one varicap for audio and pll so at different voltages from the PLL makes audio sound different as audio is modulated onto the tuning voltage. There is also no pll filtering apart from from eletrolitic cap so you can hear a high pitch whistle with the audio modulation, sounds like an mp3 with the high frequency noise. Stay clear!!!

The picture RF head has posted includes the regulator for osc and other bits, its much better

And hello everyone, been a while !

radio-berlin · Post by **radio-berlin** » Sat Mar 07, 2015 11:51 am

Its made by the guy that makes the RDS and them shitty stereo encoders on ebay! The RDS is good but not the rest! Think he is PCB Wizard

s2000 · Post by **s2000** » Sat Mar 07, 2015 4:44 pm

http://www.ebay.co.uk/itm/PLL-FM-TRANSM ... 4635e9ad7e

shuffy · Post by **shuffy** » Sat Mar 07, 2015 7:22 pm

Just tried to analyse the circuit, doesn't look like a copy of any BW stuff I've seen. R always liked the motorola PLLs, never seen him use an SAA1057. The 2N3866 as PA sets it apart too.

Welcome back Berlin, I was wondering if you'd disappeared or if you were hiding amongst the "new" names on this version of RN!

RF-Head · Post by **RF-Head** » Sat Mar 07, 2015 9:10 pm

Welcome back berlin

The board i made about 15 years ago was using the RF part from BW but the 145170 was in that time expencive and almost impossible to get here in the Netherlands
So i used the "pira pll"with the SAA1057
Changed the loopfilter and made about 100 pieces of this board(for a webshop fmzenders.com)
Later i made many other designs (see picture)
Because i was not happy with the PLL part and osc
2N3866 is not the wright way i think

radio-berlin · Post by **radio-berlin** » Sat Mar 07, 2015 9:11 pm

Cheers, just been keeping my head low.....

LDS · Post by **LDS** » Sat Mar 07, 2015 11:58 pm

Nice to have you back Radio Berlin been ages hope your well mate.

When you get a chance do reply back to my PM lol

pjeva · Post by **pjeva** » Sun Mar 08, 2015 10:01 am

Here is schematic of BW driver board. RF Head's version is obviously different than this. Also, BW had filtering on power supply, and their design is not no tune. You neex to set frequency with changable coil to have about 5-6 volts on varicap.

radio-berlin · Post by **radio-berlin** » Sun Mar 08, 2015 10:31 am

I see your still using my little smile face and on your stuff rf head

That's my trademark cough cough

. I should have copyright

I'm only joking

RF-Head · Post by **RF-Head** » Sun Mar 08, 2015 11:14 am

@ Berlin
Yes mate it looks like this

Our station logo from 2009 before the big raid