dg0ve amp design

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VK5YYY
Posts: 79
Joined: Sun Sep 27, 2015 1:47 am

dg0ve amp design

Post by VK5YYY » Sun Mar 04, 2018 12:37 am

I note the dg0ve circuit in GW0KAX's post elsewhere on this forum
https://www.dg0ve.de/en/index_htm_files ... 017_01.pdf
Roberto applies 3V to the input pin of what I guess is a Mitsubishi module
The data sheets indicate that the input to a Mitsubishi module is capacitor coupled
Could someone please set me straight on what Roberto is achieving with the 3V to the input pin

G4FRE
Posts: 123
Joined: Fri May 26, 2017 6:57 am

Re: dg0ve amp design

Post by G4FRE » Sun Mar 04, 2018 4:21 pm

The datasheet is very confusing. On the rhs it shows two pot adjusted gate supplies, one on the gate pin, one on the AMP input. On the lhs it shows putting 12v directly on the gate pin. Without seeing inside to know for sure, it may be a module and a discrete device?
Dave
g4fre

g8gtz
Posts: 1305
Joined: Wed Apr 07, 2010 6:26 pm

Re: dg0ve amp design

Post by g8gtz » Sun Mar 04, 2018 4:30 pm

Just a point to note in case people have not seen it else where but unfortunately Roberto DG0VE died suddenly last week - a great shock as he has done a lot of good things for the amateur community and as I understand it, he was only in his late 40's.

73
Noel - G8GTz

g0mjw
Posts: 1333
Joined: Sat Sep 20, 2014 9:15 am

Re: dg0ve amp design

Post by g0mjw » Sun Mar 04, 2018 4:39 pm

That's awful news Noel. I wasn't aware.

Mike

M0YDH
Posts: 211
Joined: Sat Dec 31, 2016 5:59 pm

Re: dg0ve amp design

Post by M0YDH » Tue Apr 03, 2018 5:29 pm

Yes It's a tragic turn of events. I was reading some tributes from his Funkfreunde in German over the weekend as there's no clue from the company website about his death.
I wrote an email asking if the Band pass filter for 23cm is available. I didn't expect a reply nor today's packet from Germany. I have a shiny BPF and an invoice signed A Norbert of Roberto Zech Electronik. So I guess his company is still trading. I wish them well.

73

David M0YDH

VK5YYY
Posts: 79
Joined: Sun Sep 27, 2015 1:47 am

Re: dg0ve amp design

Post by VK5YYY » Tue Oct 01, 2019 12:52 pm

Hi Folks

Since dg0ve sadly went silent key is anybody continuing his legacy?
A google search reveals very few links.
Earlier in this thread it appeared in the short term someone did
His website appears silent key these days
Any clues anybody?

Cheers Roger VK5YYY

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