The time accuracy is not a problem as my cellular
phone service uses GPS type time controlled display so all I have to do is set
the laptop to the cell phone.
For amp power, I am trying to setup either a
dual-battery system, using a deep-cycle battery charged at home, or I have
6 gell cell batteries fo 17Ah each and would like to try to bank them
together so as to get 12Vdc at 6*17Ah=102Ah so another question arrives to do
this would it be positive to negative thru all 6 batteries OR all positives and
all negatives together?
For the laptop battery I also have a 34Ah gellcell
that I was going to setup for a small inverter for just the laptop.
PLUS I always carry a jump starter pack that is
kept charged at home for when I go out to play on the radio. Been there, done
that! Dead battery on a remote mountaintop at 1AM and had to wait till the next
morning till I could get ahold of a friend of mine to come give me a
Might be a bit vain but, what about remote internet
link to the WSJT/JT44 pages? My cellphone can do it but at a cost of
$.50/minute!!! But thats a question for later on down the line. OR Might
have to try to find some linked repeaters that some of you folks can hit as well
so as to keep abreast of the activity loggers. Had also planned to use
skeds as well as posts to here when going out for a extended period of
Another reason for the 100% mobile is that my
darling 13yr. old daughter has dance classes 5 nights a week usually from around
6pm to 9pm area so it helps to have my radios to pass the time...;-) as well as
I am a School Bus Driver and have to kill the day from around 9am to 2pm each
Jacob Tennant K8JWT
----- Original Message -----
Sent: Tuesday, August 13, 2002 5:45
Subject: Re: [wsjtgroup] Suggestions
You do need some way of getting the time
accurately and for portable operations I use a handheld GPS.
My portable set up is an FT-847 to a 300 watt
mirage amp and a 7 element 2.7 metre long yagi. I find that with WSJT
which is 100% duty cycle it is necessary to back off the power to avoid
overheating the amp.
A further point is that with the high duty cycle
and the fact that these modes take a while to complete a QSO it is wise to
have a separate battery so you can still start the car. I use a Honda
gen set to keep the second battery charged.
You also need to think about how you will keep
the computer (in my case a Latop charged up). I use a DC AC inverter to
charge the Laptop. One problem I found is that if I let the Laptop run
its battery down it goes into a fast charge mode and this produces RF noise of
around 6 dB on the WSJT scale - so it is necessary to keep it on charge all
73 Rex. VK7MO
----- Original Message -----
Sent: Wednesday, August 14, 2002 7:09
Subject: [wsjtgroup] Suggestions
Hello from Jake Tennant K8JWT/mobile.
the call you can probably tell that due to a crappy home location, I
now 100% mobile operation.
Looking for any suggestions as to
ideas etc... for my WSJT/JT44 setup from
the car. So far I am
running a Alinco DX70t radio into a TE Systems 160watt
amp. and will be
using some type of horizontal/omnidirectional antenna
except during long
haul skeds whereas I have a base for a beam from my rover
Any ideas for anything else...
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