SWR Question

[JohnnyFingers]

I have a Uniden Bearcat 980 SSB CB Radio. It has an onboard SWR meter. In addition I have an Astatic PDC1 external SWR Meter. I have matched the readings between the 2 and they are pretty much on par. below are the readings with both.

With the Astatic PDC1 meter attached to the radio:
The Astatic meter reads an SWR of:
Channel 1 - 1.49
Channel 40 - 2.51

With the Astatic PDC1 meter attached:
The radios SWR meter reads:
Channel 1 - 1.45
Channel 40 - 1.82

Without the Astatic PDC1 meter attached:

On the onboard SWR meter reads:

Channel 1 - 1.43
Channel 40 - 1.10

The 2.51 reading with the meter attached is what concerns me. No matter how much adjusting I do to the antenna that number remains high

So which meter reading do you guys suggest I go with?

By the way the radio is installed in my car.

 

[slowmover]

When in doubt (your dilemma) tune to the channel you use until you have changed locations. If that channel is AM-19 you know you are GTG at present.

My U-980 tends to be optimistic versus the A-meter. Could be bad jumper, faulty meter, etc.

Once you are in a wide open field far from any trees or structure as best you can arrange (with doors shut and a new jumper), let ‘er rip.
I

 

[JohnnyFingers]

Thank you so much for the info slowmover

 

[slowmover]

I used to set my Chrysler at the house. Then I’d run a good forty miles or more — not a pain, a pleasant drive, I rebuilt that car for it — and unfold that 9’ whip at a VERY wide shoulder on an overlook free of obstructions.’

I’d take my time and make notes: under best conditions, readings were . . .

 

[JohnnyFingers]

I have mine installed in a 1969 Chevelle SS. Im also looking into getting a CB radio from that period. A modern radio doesn't look so good in that car.

 

[slowmover]

Mine (above) was a 1971.