RE: LF: RV: EbNaut modulator for G0MRF D class PA

[VIGILANT Luis Fernández <luis@vigilant.es>]

Ciao Antonio again

 

Ops! I finally understood what you mean

 

The original G0MRF PA do not use DIP 4013 chips. My wrong assumption, sorry !

I don’t have the original pcb and assembled my own

 

Back to the design desk  ;-)

 

73 de Luis

EA5DOM

 

De: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] En nombre de VIGILANT Luis Fernández
Enviado el: miércoles, 12 de diciembre de 2018 13:06
Para: rsgb_lf_group@blacksheep.org
Asunto: RE: LF: RV: EbNaut modulator for G0MRF D class PA

 

Ciao Antonio

 

This PCB is mounted in a DIP14 shocket and REPLACES the original DIP14 4013 in the PA. Please review the picture carefully

So, just need to remove the original DIP14 4013 and plug the module. That’s all

 

The only advantage over your approach is extreme simplicity. Schematic is the same

One can also undo the mod and place the DIP14 4013 if finally find EbNaut is not his cup of tea

 

73 de Luis

EA5DOM

 

De: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] En nombre de ik1hgi Qrss Qrpp
Enviado el: miércoles, 12 de diciembre de 2018 12:43
Para: rsgb_lf_group@blacksheep.org
Asunto: Re: LF: RV: EbNaut modulator for G0MRF D class PA

 

hello Luis I saw your project to use the PA of G0MRF Amplifier I have a doubt how do you use your scheme from the DIP 4013 if you use a SMD 4013 on the David G0MRF amp? the thing can be on another amplifier if it uses integrated DIP.

 

I've already informed you the experimented for two years thanks Riccardo IW4DXW gave this idea to transmit with two small modular one for modutale in TX the other GPS uses 4070 for modular amplifier G0MRF until today no problem, on my pay I put the whole system for all who uses David G0MRF amplifier

https://www.qsl.net/ik1hgi/472khz/modulatore.htm    https://www.qsl.net/ik1hgi/472khz/buffer-gps.htm

73 Antonio IK1HGI

 

ciao Luis ho visto il tuo progetto per utilizzare il PA di G0MRF Amplificatore ho un dubbio come fa autilizzare dal tuo schema il DIP 4013 se utilizza un SMD 4013 sul amplificatiore David G0MRF? la cosa puo essere su altro amplificatore se utilizza integrato DIP.

 

Ti informo già lo sperimentato da due anni grazie Riccardo IW4DXW ha dato questo idea di trasmettere con due piccoli modulare uno per modutale in TX il GPS altro usa 4070 per modulare amplificatore G0MRF fino oggi nesun problema, sulle mie pagime ho messo tutto il sistema per tutti chi utiliza amplificatore di Davide G0MRF  

https://www.qsl.net/ik1hgi/472khz/modulatore.htm  https://www.qsl.net/ik1hgi/472khz/buffer-gps.htm

 

73 Antonio IK1HGI

 

Il giorno mer 12 dic 2018 alle ore 09:28 VIGILANT Luis Fernández <luis@vigilant.es> ha scritto:

Hi EbNaut

 

I have squized the XOR gates needed to modulate BPSK for EbNaut transmissions using the G0MRF PA

 

The final result is a 4013 compatible plugin module. So, you only need to remove the 14Pin DIP 4013 chip and plug the

module in the shocket. For modulation a two pin input connector can be wired to any USB/COM converter even

using 3V3 levels. The Windows EbNaut Tx program will manage the DTR+DSR outputs for this COM port. It uses an

optoisolator. You can resize the series resistor in the input side to adapt for higer voltage drive levels

 

To drive the PA, any cheap NEO6 GPS can be programmed to output the right 2X frequency in LF or MF. The 3V3 can

be the only issue and you need a simple transistor to increase levels to 5V or more

 

The PCB is single side, no drills. Just a wire jump is needed. SMD components are used but I find this easier than drilling

and using pass trought components. This links to a pìcture of the module

https://www.dropbox.com/s/brak1h0j0naqe6y/IMG_20181211_140305_557.jpg?dl=0

 

73 de Luis

EA5DOM

 

--

Salve Antonio ik1hgi

http://www.qsl.net/ik1hgi/472khz/gps-x.htm

 

http://www.qsl.net/ik1hgi/472-50.htm

http://www.qsl.net/ik1hgi/qrp/index.htm

http://www.qsl.net/ik1hgi/eqsl.html

 

ik1hgi.qrss@gmail.com
ik1hgi.atv@gmail.com

Antonio ik1hgi 73

RISERVATEZZA (ai sensi D.Lgs n. 196/03)