Check SWR on SSB only radio?

[T23]

How do I check the SWR on an SSB only radio?



T23

 

[Happy_Hamer]

How do I check the SWR on an SSB only radio?



T23

Well I seen this post and tried it on my radio on SSB.

go to this web site

Frequency Generator - Music @ MieNet: Home for the Serious the Fun & the Funny !

Scroll part way down and adjust the frequency somewhere between 800 and 1000, not that important on the setting

key your mic next to the computer speaker with the solid tone and check your swr

Let us know

 

[W5LZ]

Very basically, you have to have a constant tone input to take the place of a 'carrier'/'dead-key'. Doesn't much matter how you do it, but it has to be done that way (as Happy_Hamer said with his example).
And because it's a constant tone, it won't make any difference if you measure -power- in AVG or Pep, it will be the same. If it isn't then your meter is bad. Howz that for an interesting thingy??
- 'Doc

 

[T23]

Well I found out I can use the CW mode for checking the SWR.


T23

 

[TonyV225]

YUPP if its a contstant carrier.

 

[T23]

Yeah, I realize that now, when I had my SWR meter inline with my radio and tried to check the SWR on SSB I thought I had burnt up the SWR meter because I thought I had put too much wattage through it since the SWR meter was for C.B use, but it worked fine on my mobile C.B with a 60 watt amp in line with the SWR meter after the amp instead of before it after that so that wasn't the case, so I guess now I will have to check it on CW.

Anyone know how to tell how much wattage an SWR meter will handle?


T23

 

[TonyV225]

what model swr meter is it?

 

[T23]

I have an Astatic PDC7

An Archer SWR meter from early 70's late 60's?

A Micronta/Radio Shack SWR meter form the 70's.


T23

 

[TonyV225]

PDC7 shows 25 watts

 

[T23]

Heh..better not put it in line with my KL-60 anymore then,,


T23

 

[W5LZ]

One way of telling the power rating is if the thing is also a watt meter (most are), the usual limit is the max power rating on the watt meter scale.
- 'Doc

 

[T23]

Ahh, I see, I didn't see that, I don't see to well..heh..heh... Most of the time I just pull the SWR meter out when I need to check the SWR and thats it.


T23

 

[T23]

Question: I have a variable power on my radio, does the power setting have any affect on the SWR?

My radio has a 5 watt and a 25 or 35 watt swith on it I think...

T23

 

[TonyV225]

yes it does but usually a diffrence is seen in big power jumps like with an amplifier. the higher the power the higher the swr most of the time on a tuned antenna system just a slight difference is seen. AlthouGH Ive seen major differences in a troubled or bad setup.

 

[T23]

well I am not running an amp on this setup it was just mentioned to prove a point of the wattage I had run through the SWR unit.


T23