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Post by mark on Jul 30, 2020 20:51:01 GMT
Something interesting for Procaster users. Was on 1630 and didn't like that I can't be received on all radios/tuners so I tried 1500 and thought my range would suffer and sure enough the meter peak was less than before with the 3 meter exact length. So thought what will happen if I changed antenna length. Got the idea to cut exactly 10cm(4") off the length and watched the meter and totally changed the reading. Re-tuned and to my surprise the peak was the same reading I had with the 1630 setting. Signal strength coming off the antenna with signal strength meter and coverage was *exactly* the same as 1630. I can now be received on any radio ever made just as good as before.
Also found what the manufacturers say, that lengthening the antenna makes it worse not better.
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Post by Admin on Jul 30, 2020 21:57:11 GMT
Curious, did you repeak before cutting the length? Lower frequency would require more length or in your case more tuner inductance with less length. But, whatever works, go with it.
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Post by mark on Jul 30, 2020 23:53:36 GMT
Yes, just switched frequency and repeaked the meter and if you are familiar with the tuning meter it was peaking at slightly under 8 at 1630. Just changing to 1500 and retuning it only peaked at just under 6 and less signal from the antenna with the signal strength meter. Antenna is taped to the wall, cut 10cm exactly from the antenna and that affected the meter and retuned and was peaking back at just under 8 and signal strength was the same as before off the antenna and did a range check and just as 1630 was. Posted my range drawn on the map of my area on Part 15.Org as here wouldn't upload the picture and didn't know how to reduce the size to get it to post here.
Also found that different thicknesses of wire affect performance also and to my surprise thicker is not better.
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Post by Admin on Jul 31, 2020 12:44:53 GMT
Can't argue with performance. By the way, I was able to post your map in that post. Use "add attachment" instead of"add photo".
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Post by mark on Jul 31, 2020 17:39:19 GMT
I tried that(I think) but it wanted a url address or something but with add attachment it took me to my computer and opened from my pictures but it said to big to post as was over the max size. Everywhere else it just posted it.
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