[NLRS] RE: [BC'ers] Sequencer Question

[Chris Cox, N0UK]

I do similar on my 144MHz station except I do key the I/F rig directly, 
either by PTT, footswitch, etc.  When I am running barefoot, the 
sequencer does not get engaged as the mast-mount preamp can safely 
operate RF sensed at lower power levels, and the transverter is 
only run at about 5 watts out.  Regardless, the transverter's PTT out 
operates the mast-mounted preamp control box's PTT in.  When I need the 
amplifier, the preamp control box is fed to the sequencer which then 
engages the relays which bypass the amplifier and then apply ptt to the 
amplifier itself.

When switching back to receive, the amplifier is unkeyed prior to 
switching the bypass relays back to standby.

This seems somewhat counterintuitive at first in that why would I not 
sequence everything?  The reason is that I want the ability to run 
low-power where sequencing is somewhat optional but feel I MUST sequence 
when on high power.  Initially I did control everything after the I/F, but 
then I have to run full power, or install a second sequencer just to 
control the amp bypass & ptt controls.

73  Chris Cox, N0UK  email: chrisc at chris.org or chrisc at BritishCarAndDriver.Com
                                              or chris at SotaMINIs.Com
  Home Page: http://WWW.BritishCarAndDriver.Com   http://www.pingjockey.net

  Don't Believe Everything You Think.