From the Knowledge Base Hooking up an External AMP http://kb.flex-radio.com/article.aspx?id=10056
Keying an Amp with the SDR-1000 Using the X2 Connector http://kb.flex-radio.com/article.aspx?id=10322 Ken Jim Dunstan wrote: > Hi, > > I have the 1 watt SDR-1000 and use it to drive an external amplifier. The > manual indicates that the External PTT control is available at Pin 7 of the > X2 connector. I am using a 12VDC PC relay as an intermediate switch > between the SDR-1000 and the external linear amplifier. I will be sending > +12VDC to the linear amp. control. > > I have connected the RLY as follows: > > - one side of the RLY coil is connected to Pin 7 of the X2 connector. > - the other side of the RLY coil is connected to +12 VDC. > - pin 15 of the X2 connector is connected to GRND as is the -12VDC > > > - I have connected a diode across the relay coil as shown in the diagram in > the manual. > > > However the written instructions in the manual indicate that Pin 8 of the > X2 connector is a diode that should be connected to + side of the relay > coil. I assume this diode (Pin 8) is not the diode shown in the manual > diagram. It appears the manual diagram does not show the Pin 8 diode, but > an external diode. > > My question is should I follow the written instructions and connect Pin 8 > to the +12VDC side of the relay in addition to the diode across the relay > coil .... or leave it unconnected as in the manual diagram? > > Jim, VE3CI > > > > _______________________________________________ > FlexRadio mailing list > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > FlexRadio Homepage: http://www.flex-radio.com/ > > FlexRadio Knowledge Base: http://kb.flex-radio.com/ > > -- Flex-Radio Customer Support (1-512-250-8595) --------------------------- The answer to your question can be found in the wonderful new Knowledge Base Please use it frequently http://kb.flex-radio.com/ _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com/ FlexRadio Knowledge Base: http://kb.flex-radio.com/
