Hello, looking for some help
I have an NRG PLL PRO 4 PCB but no build instructions.
Dose anyone have them ? Can’t find a thing on the internet... would really like to get this built...
Many thanks
Re: NRG Pro 4 build instructions
Posted: Mon May 03, 2021 1:20 am
by Albert H
Pro 4? Did that come from New Zealand?
Re: NRG Pro 4 build instructions
Posted: Mon May 03, 2021 8:21 am
by teckniqs
Albert H wrote: ↑Mon May 03, 2021 1:20 am
Pro 4? Did that come from New Zealand?
I think I've seen just the PCB for sale from other sellers on eBay.
Re: NRG Pro 4 build instructions
Posted: Mon May 03, 2021 11:17 am
by MiXiN
Andrew_kits used to sell the boards on eBay about 2 or 3 years ago, and they were decent. Gold coloured traces.
These used rotary type switches to set the frequency if I recall correctly.
Brought the pro 4 PCB off eBay years ago. Been collecting dust since... it was just the PCB and no paperwork !
Re: NRG Pro 4 build instructions
Posted: Mon May 03, 2021 8:14 pm
by nrgkits.nz
I supplied build instructions for the Pro4 to customers who purchased it from me. I designed the upgrades/mods for the Pro4 which Andrew Kits then just copied.
I have since gone on to release new versions, the Pro 5 and now the Pro6 - the Pro4 is no longer available.
Re: NRG Pro 4 build instructions
Posted: Fri May 07, 2021 6:56 am
by radium98
an old building , miss some components as the output transistor .NRG kits very clean sound , if i had the wa yto buye an original i will.
Re: NRG Pro 4 build instructions
Posted: Fri May 07, 2021 10:25 am
by mpx
If there's any built NRG PRO 3/4/5/6 available, let me know. Would be interested in a few boards, plus any PAs or whole built TX. Cheers
Re: NRG Pro 4 build instructions
Posted: Sun May 09, 2021 12:27 pm
by MiXiN
mpx wrote: ↑Fri May 07, 2021 10:25 am
If there's any built NRG PRO 3/4/5/6 available, let me know. Would be interested in a few boards, plus any PAs or whole built TX. Cheers
Not 4W like the NRG Pro3, but Zozo, a member of this forum, is selling some decent ready built drivers on here & they're compact unlike the old NRG boards.
I have a copy of the nrg pro4 instructions in pdf, i've tried posting them here for you, but it won't let me i get an an invalid instruction message.
Re: NRG Pro 4 build instructions
Posted: Tue May 11, 2021 11:39 am
by shorty
Bazz, i've pm'd you with a pdf attached of the nrg pro4 instructions
Re: NRG Pro 4 build instructions
Posted: Tue May 11, 2021 8:48 pm
by MiXiN
shorty wrote: ↑Tue May 11, 2021 11:39 am
Bazz, i've pm'd you with a pdf attached of the nrg pro4 instructions
Shorty,
I was cleaning up my phone memory earlier & came across loads of old files from Katruud, NRG, & all sorts. Amongst them, I found the Pro4 instructions.
it is easy to assemble from the version 3 , not complicated with some experience , all the same principle.Also without any document .That sad to see again you have to tune manually the vco , where the pll part is luxury with rotary encoder , but the vco is manual and if the variable capacitor fail , it will sprog harmonics .
Re: NRG Pro 4 build instructions
Posted: Sat Mar 18, 2023 7:26 am
by radium98
i saw a pcb layout or .lay for version that have bcd , anyone can drop it again
Re: NRG Pro 4 build instructions
Posted: Sun Mar 19, 2023 2:22 am
by Albert H
radium98 wrote: ↑Fri May 14, 2021 7:55 am
it is easy to assemble from the version 3 , not complicated with some experience , all the same principle.Also without any document .That sad to see again you have to tune manually the vco , where the pll part is luxury with rotary encoder , but the vco is manual and if the variable capacitor fail , it will sprog harmonics .
Nope. If the trimmer capacitor failed (very unlikely), the VCO just wouldn't lock, and there would be no output, because the Out-Of-Lock circuit wouldn't allow the signal through the drive stage. When Stephen Moss came up with that VCO, he made sure that even the most ham-fisted dingbat shouldn't be able to get it to misbehave!