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76 hours and counting..


"Philip"
 

My Ultimate QRSS rig has now run for 76 hours without problems
using WSPR mode..
It's been using a 10AH lead acid battery for power and today, it
measured 11.3 Volts on the terminals, a drop from 12.4 Volts which
isn't bad for untethered power (had the solar panel disconnected).

Anyhoo, very pleased and will turn it off later for some mods...
Going to put the GPS module into a seperate box with 6 pin din
connectios to the rig.
This means with a din socket on each QRSS rig, I can easily swap/share
the GPS module.

Also, will be fitting a variable DC to DC convertor to give a variable
supply to the PA transistor for tweaking power levels..

Great fun with loads of spots and a fair few inter G on 30 today..
Onwards and upwards

Philip G4JVF


Stephen Farthing
 

Phillip,

That is very encouraging. When I have the time I am thinking of a couple of modifications for mine. Remote mounting of the GPS is a good idea.?

Firstly, to save power, I was going to try switching the display off when I don't need it. Secondly to put a stepped attenuator between the beacon and the aerial so I can see how low I can go!?

I am waiting for the voltage regulators you recommended to arrive from the orient.?

73s Steve G0XAR