ok the Rig is a YAESU FT-757GXII the SWR meter is a jetstream 1.8-200mhz meter.
That may give us some clues, anyway.
I think the Jetstream is a manual meter - that is, the sensitivity has to be set
manually for full scale, then you switch to reflected power to read the SWR.
(I don't have one, so am going from the generic case.)
To do so, you need a continuous output carrier from the rig. So I'm assuming
that you are keying the rig in FORWARD mode (or whatever it is called), adjusting
the sensitivity control so the meter reads full scale, then switching it to read
SWR. If the output power changes for any reason you have to repeat this process
to get an SWR reading. Otherwise, if the sensitivity control isn't set properly for
the output power, the SWR reading will be incorrect.
There are several ways to get the rig to generate a carrier: I use CW mode
since I have a key connected anyway. But for those don't, then AM, FM or
RTTY are often used instead. If you use AM mode then the carrier output
is usually limited to about 20 or 25 watts - is that what you are doing?
Otherwise, the rig should be capable of full output in CW mode.
If you are using SSB, then it is much more difficult to measure the SWR
unless you have a peak reading meter. That's because there is no output
power until you speak into the mic, and the output power changes with the
voice modulation waveform much faster than the meter can respond. With
the mic level set properly, you'll probably see around 20 to 30 watts measured
on a non-peak reading meter. THAT'S NORMAL FOR SSB. If you crank up the
mic gain to get a higher reading it will distort the signal badly, and you'll splatter
up and down the band.
All of these contribute to uncertainties in both the SWR and output power
measurements - that's why it makes a difference how you are taking them.
ok now for the very stupid question I don't have the rig hooked to a separate ground as I wasn't sure if it was nessesary as I am running it straight from a 12v Deep Cycle
A separate ground connection shouldn't be needed for proper operation of a
self-contained antenna like a dipole. I don't bother with them, especially for
It can change the SWR, however, if you aren't using an effective balun, because
then the outside of the coax and everything attached to it (rig, battery cables,
etc.) become part of the antenna. In such a case, adding an external ground
connection (or removing one, for that matter) can change the SWR because
you are changing the antenna
. With an effective balun at the antenna
feedpoint, a ground connection shouldn't have any effect on the SWR.
That's not to say that there aren't cases where you would a ground connection
for some other purpose: lightning protection is probably the biggest one, if you
are in an area where that is a problem. But making an adequate ground to
protect your station is an entirely separate topic own its own.