I run one of the new sp500's, aluminum quality seems too be like the old one, the plastic crap for the match sucks, the antenna performs quite well, way better than the imax2000.
Did you ever own one of the originals from the 1970's?
I personally don't think there is enough difference to really matter between most CB 5/8 wave vertical antennas we might talk about here on these forms. Not only have I found in my real world testing that these type antennas are all very similar in performance, I've posted such on YouTube videos.
Also below I post some Eznec model performance results with an overlay of the patterns showing support for what I've reported above in Bold print. I also recapped the results on the bottom of the overlay page.
View attachment 12661
According to these models you will note that the SP500 indicates a much better natural match at the feed point. I also find my model for my I-10K (not included) to show about the same results. None of these models have matching devices included, so my best guess as to the differences in results may be due to a slight difference in radiator length and diameters used. In these models I tried to set all dimensions to specs as best I could...excepting I did not use tapper in the elements, and all antennas were at 32' feet above average Earth. I also set all segments counts as close as I could to produce 3" inch segments in all models.
Marconi,
I am no way near an Antenna Pro like yourself, and I agree unless facts are proven anything on here is just hear say
On the other hand, I do have one of the new SP500 from ham radio outlet . com, they were $149 when I bought it and had free shipping.
The aluminum when compared side by side with my AV170 seems to be close in thickness compared to say a newer Starduster which is what ummm...ohh M400, now that is real crap quality, I know because I have one of those too.
The ears on the SP500 are a lot cleaner, meaning less static noise coming into my receiver, transmitting i've never asked if there were a difference.
All of this is just my simple opinion for sure
(Oops and I like the fact that the SP500 stands straight and tall in the high winds versus the Imax laying over, seems to affect trans and receive.)
AkBowtie, your comments and opinions here are just as important and can be just as interesting and informative for this forum as comments from any other member.
It is easy for us all to just give our opinions on stuff we're discussing, and many members likely wish only to be brief. I often wish to know a little more as to the "why or what" is the basis of ideas, comments, or opinions however. So, I tend to ask questions.
The following example sort of makes my only point in my earlier comments. I asked you this question earlier when I asked; "You mention that the plastic crap for the match sucks. Can you describe a little more what that means?" In this case I am curious and I feel it might be important to a perspective buyer or a new owner of the New SP500 to better understand your concerns.
If you knew about this issue before you bought your antenna would you not buy a new SP500?
Did you ever own one of the originals from the 1970's?
The plastic sucks? Mines over 38 years old and the plastic is still good!!
He still has a slew of them for sale. I asked him how much shipping is to Indiana.
He still has a slew of them for sale. I asked him how much shipping is to Indiana.