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Flash interface

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History

For those who knows me, for years I was involved in the remote control of radio transmitters.

In 1978 my first experiment was with an modified RCA AT-3 transmitter controled by DTMF over PSTN,variable frequency of 100khz on 80m was achived on the pretune transmitter.In 1998 and during my works at Nortel Networks I was introduced to the World Wide Web and subsequently to the various tools available to construct a web base application to control and simulate a transmitter front panel.I choose my modified Collins Radio interface and made the frequency tuning linear as per the outstanding works of the electrical and mechanical engineers of the Collins Radio company.This interface control my modified RCN CMC AN/SRT-502 transmitter. In 1979 during one of my contacts with an ham operator from U.S.A. he told me "you should try to use your system on the INTERNET" at that time I did not know the internet and I forgot about it, it was the time of the complete phased out of the relays switching telephone system.

Here is my vision.... .. guy

front-panel

For encryption, makefile modification to generate pem files. makefile-mod

On the directory /etc/pki/tls/certs/makefile.

Add the line cat $$PEM2 >> $*.crt ; \ to extract the public key with .crt extension.

A cron job is required for the TTL of the pem.

Use Emacs or vim for this.

%.pem:
	umask 77 ; \
	PEM1=`/bin/mktemp /tmp/openssl.XXXXXX` ; \
	PEM2=`/bin/mktemp /tmp/openssl.XXXXXX` ; \
	/usr/bin/openssl req $(UTF8) -newkey rsa:2048 -keyout $$PEM1 -nodes -x509 -days 365 -out $$PEM2 -set_serial $(SERIAL) ; \
	cat $$PEM1 >  $@ ; \
	echo ""    >> $@ ; \
	cat $$PEM2 >> $@ ; \
	cat $$PEM2 >> $*.crt ; \	
	$(RM) $$PEM1 $$PEM2