Question about RoadPro RPSWR-2C Swr Meter 10-100w Pwr - Swr Switch

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How to use my roadpro swr meter - RoadPro RPSWR-2C Swr Meter 10-100w Pwr - Swr Switch

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Rpswr 3 c


most meters have 10w capable diodes.. also have seen a few were the switches will not make a good connection. can you give more details on power you was using or anything else?

Apr 28, 2013 | RoadPro RPSWR-3C Swr Meter - 10w-100w -...

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Roadpro rpswr


What was the radio that you keyed?

Apr 28, 2013 | RoadPro RPSWR-3C Swr Meter - 10w-100w -...

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Have a new cobra 29lx. Everthing works fine except for the SWR meter. Can't use the meter to adjust SWR. No matter what I do the meter stays the same. Sent to factory but they said nothing was wro


The SWR cannot be changed by rotating this knob. The SWR function allows you to determine the SWR or "match" of the antenna system and transmitter on a specific channel. The entire process must be performed whenever you want to know what the SWR is on a different channel. The SWR/CAL button toggles the meter between the CALIBRATE and SWR modes.
Set the radio to CH1. Press the SWR/CAL button. The radio CAL(ibrate) mode is now selected. Press and hold the mic PTT (or push to talk) button. Rotate the SWR knob as needed to adjust the meter indicator until it is on the SET mark on the dial. The meter is now calibrated for this channel.

While still holding down the mic PTT, press and release the S/RF SWR CAL button to the SWR setting to read the SWR on the meter.



This entire process should be done for Ch 20 and Ch 40. You must go through the CAL procedure for EACH channel before attempting to read the SWR.


Changing the SWR requires that the antenna be lengthened or shortened until such time that the SWR can be reduced no further. Typical SWR across the band may be:


CH1 - 1.5:1, CH20 - 1.1:1, CH40 1.5:1


or


CH1 - 2.2:1, CH20 - 1.7:1, CH40 2.3:1


The "dip" in SWR on CH20 is typical, as the antenna is the perfect length on only one channel - it will be come slightly too long or slightly too short as you tune up or down from CH20. The further away from CH20 you go, the poorer the SWR will be. You can "slide" the dip to any channel you prefer - say CH8. If you tune for lowest SWR on CH8, You might see CH1 with a 1.2:1 SWR, CH8 at 1.1:1 SWR and CH40 at 2.5:1. All are acceptable - sort of. Many manufacturers say up to 2.5:1 or even 3.0:1 matches are ok, There's no reason a quality antenna can't be tuned for optimum SWR in the middle of the band (CH20) to have less than a 2.0:1 SWR on CH1 or CH40, unless there is a ground issues or bad cable / antenna / connection somewhere.


You can view the manual here. I hope this helps & good luck!

Nov 30, 2012 | Cobra 29 Lx Full-featured Cb Radio

1 Answer

AVAIR 601 instruction swr meter


the two you have pictured are close but no cigar.

Sep 21, 2012 | RoadPro SWR/Power Meter with Combined...

1 Answer

My ANT light comes on when ever i push the mic button but my SWR isnt that high


The meter will be more accurate and an external meter will be even better. If they show good disregard the ant light it is adjustable. It may have been set to sensitive from factory. These erroneous SWR reading can be the side effects of a PEAK & TUNE if the coils have been spread but that should also show on meter.
SWR meter calibrations
  • Switch (S/RF SWR CAL) to the CAL position.
  • Push and hold mic button
  • While holding mic button adjust the SWR CAL knob so the meter needle swings to the CAL mark on the meter
  • While still holding down the mic button, set the (S/RF SWR CAL) switch to the SWR position, to read the SWR reading. Note: When switched to SWR position the meter needle should ideally be as far to the left as possible. Anything over 3 is not acceptable.

Jul 28, 2011 | Cobra 29 LTD CB Radio

2 Answers

I have a swr meter and i would like to no how to ues it


Goto channels 1 20 and 40 and do the following.... this a generic calibrate all swr meters have different buttons different style of meters etc...
set meter too the set/cal/fwd position. key mic adjust the meters needle to cal spot should have an arrow or red line etc. then change switch to swr/rev too show your reflected swr.

ch 1 is longer wavelength than ch 40.
if ch 1 is good swr and ch40 is high swr-- then make antenna shorter
if ch 40 is good swr and ch 1 is high swr-- then make antenna longer.
then try to get a good balance between the lowest freq and the highest freq./ch.
-- anymhz(dot)com ---- Radio Shop

Dec 06, 2010 | Radio Communications

1 Answer

Not sure how to use the swr meter on my cobra nw


The SWR meter connect between your antenna and your rig,
So the Out of the rig, goes into the SWR meter, and the antenna plugs into the SWR meter.

Jan 19, 2010 | Cobra 29 LTD CB Radio

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