does gmrs, specifically the wouxun 1000g need swr calibration like with cb?

[tap]

First gmrs radio coming today. Wouxun 1000g with nl-770g antenna that says it's tuned for gmrs frequencies. I remember when I had a cb that I would need to set swr cal when I got a new setup. Does that apply here too?

[SteveShannon]

23 minutes ago, tap said:

First gmrs radio coming today. Wouxun 1000g with nl-770g antenna that says it's tuned for gmrs frequencies. I remember when I had a cb that I would need to set swr cal when I got a new setup. Does that apply here too?

No

[nokones]

As Steve said, no but, it is always good to check the VSWRs on a new setup just to make sure you're not reflecting a lot of power back into the radio by having a bad connector of a defective coax cable. It does happen and a lot of reflected power will affect the power output and you will have a poor performing antenna system regardless if the antenna is properly tuned.

[marcspaz]

 

I agree with the comments above.  No adjustments in the radio.  The nl-770g antenna is a pre-tuned antenna, that does not require tuning.

 

I also agree that it's good to check your SWR anyway.  The reasons Kenny mentioned are all good, but the location of the antenna also impacts your SWR.  If your SWR is high, you may want to move the antenna to a different location.  Cutting a pre-tune antenna and changing its resonant frequency is typically not a good idea.