NRGkitz or Veronica 50mW circuit diagram

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radium98
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Re: NRGkitz or Veronica 50mW circuit diagram

Post by radium98 » Thu Mar 26, 2020 4:51 pm

any 10 uh chok will work

anyone having software of rds aev3500

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Re: NRGkitz or Veronica 50mW circuit diagram

Post by Gigahertz » Thu Mar 26, 2020 5:51 pm

Got hold of Veronica 50mW mono transmitter construction details/manual but can't upload it as it's in word document/PDF.

If someone can let me know except for file sharing I'll get it uploaded.
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Re: NRGkitz or Veronica 50mW circuit diagram

Post by Gigahertz » Thu Mar 26, 2020 6:01 pm

Component list!
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radium98
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Re: NRGkitz or Veronica 50mW circuit diagram

Post by radium98 » Thu Mar 26, 2020 6:05 pm

GOOGLE DRIVE,DROPBOX,MEDIAFIRE

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yellowbeard
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Re: NRGkitz or Veronica 50mW circuit diagram

Post by yellowbeard » Thu Mar 26, 2020 10:58 pm

This guy has the PCB layout and placement:
http://mkmbroadcasting.blogspot.com/201 ... range.html

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Re: NRGkitz or Veronica 50mW circuit diagram

Post by Gigahertz » Thu Mar 26, 2020 11:26 pm

yellowbeard wrote:
Thu Mar 26, 2020 10:58 pm
This guy has the PCB layout and placement:
http://mkmbroadcasting.blogspot.com/201 ... range.html
Nice find Yellowbeard!

I've got 20 x BB304 in my component draw and all the other components are available online. So if anyone can get some PCB's made up we might have a evening project for any necks who want to make one up :tup

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Re: NRGkitz or Veronica 50mW circuit diagram

Post by teckniqs » Fri Mar 27, 2020 12:39 am

You could always add one of those little Pira PLL boards and 1w stage if you wanted to make a rig out of it, I've got a 1w NRG VFO with Pira PLL on the same board and it works wonders, clean as a whistle...

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Re: NRGkitz or Veronica 50mW circuit diagram

Post by Bton-FM » Fri Mar 27, 2020 10:22 am

I made some boards that are this circuit with a cmos pll and a 1 watt smd amp stage.

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Re: NRGkitz or Veronica 50mW circuit diagram

Post by Bton-FM » Wed May 13, 2020 5:06 pm

yellowbeard wrote:
Thu Mar 26, 2020 1:50 pm
Bton-FM wrote:
Thu Mar 26, 2020 11:52 am
I've started building this.What ferrite bead is on the power input?How many turns should I put on it?
It's a standard 3mm ferrite bead with 5 turns enameled wire on it.
what gauge of enamelled wire is it?

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Re: NRGkitz or Veronica 50mW circuit diagram

Post by radium98 » Wed May 13, 2020 5:37 pm

0.3 to 0.5 mm

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Re: NRGkitz or Veronica 50mW circuit diagram

Post by Bton-FM » Thu Jun 11, 2020 10:23 pm

'ello everyone
I am coming round to completing this oscillator which is in my driver board 'design' with the classic 4 chip CMOS pll. Is there anything that is that critical in the build that I should take care of? I've heard the coils need to be close to Identical?

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Re: NRGkitz or Veronica 50mW circuit diagram

Post by Albert H » Fri Jun 12, 2020 2:48 am

The coils MUST be identical for the circuit to work properly. Stephen and I tried etched coils, but found that the board became microphonic.
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Re: NRGkitz or Veronica 50mW circuit diagram

Post by Bton-FM » Fri Jun 12, 2020 9:12 am

What gauge wire do you use?I’m using 18swg and I think it’s too big.I have to file down the ends to get them to fit in the pcb.

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Re: NRGkitz or Veronica 50mW circuit diagram

Post by Albert H » Sat Jun 13, 2020 12:29 am

Drill your holes out!
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"Because it doesn't know the words!"
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Re: NRGkitz or Veronica 50mW circuit diagram

Post by Bton-FM » Mon Jun 15, 2020 11:39 pm

I finished building the oscillator part today on my 1 watt driver board and it worked first time! Even tho the coils weren’t really close it still worked and is remarkably stable, even without the pll.I just need to add an amplifier stage and the 4 chip pll and I should have a 10£ driver board !!

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Re: NRGkitz or Veronica 50mW circuit diagram

Post by radium98 » Tue Jun 16, 2020 6:54 am

Post a picture to get inspired.

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Re: NRGkitz or Veronica 50mW circuit diagram

Post by Bton-FM » Tue Jun 16, 2020 9:57 am


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Re: NRGkitz or Veronica 50mW circuit diagram

Post by Bton-FM » Tue Jun 16, 2020 1:31 pm

I put it on the analyser and I’m getting harmonics at ~ -20db relative to the carrier which is not good at all.This was a bit of a bodge - I had to widen the holes so that the coil wire would fit which meant there wasn’t much copper pad left to solder to.I’ll make sure to get the coils exact as well.

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Re: NRGkitz or Veronica 50mW circuit diagram

Post by Bton-FM » Tue Jun 16, 2020 4:02 pm

I changed the coil on the output to a bead with five turns.All the half frequency breakthrough is gone....but now there is 2F only slightly down from the carrier grrr.

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Re: NRGkitz or Veronica 50mW circuit diagram

Post by nrgkits.nz » Wed Jun 17, 2020 12:34 am

Albert H posted a 5W exciter schematic a few years back, it’s on the forums under a thread labeled “cheap 1w exciters”. Use the output matching from this schematic, not only does it match from around 12R up to 50R it also acts as a band pass filter from 87.5 to 108 - this should help cut back any 1/2 freq and 1 1/2 freq from getting to the output.

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