[NLRS] NLRS site...antenna gain measurements

[John P. Toscano]

Dave Aho wrote:
> I cannot remember who updates the page...

I get the data from Bob, W0AUS, and I transform it into HTML and put it 
on the web.

> but I noticed
> something wrong in the antenna gain area.  In the slot
> for the 902 MHz measurements, some of the entries are
> wrong.  The entries for some members are a copy of the
> 432 section.  I, N9TTX, did not have a 902 antenna
> tested, although I know KB9PJL had his tested, and if
> I remember right it was about 30 some elements. 
> KB9LVK did not have a 902 antenna tested either. 
> Others seem to be direct 432 copies...

I checked what I posted against what Bob sent me.  I added only one 
small error, and that was on Ron (KA0RYT)'s 432 homebrew WA5VJB PVC 
antenna, which I listed as 3.2 dB instead of 3.9 dB.  As I was 
converting the data for the web, I did think that there were an unusual 
number of unusually sort 902 antennas, but I believed what I was sent. 
I also thought it was odd that someone had built a 902 antenna in PVC 
modeled after the WA5VJB Cheap Yagi, but since I had never heard of such 
an antenna on 432 either, I didn't realize it was definitely wrong.  But 
I see what you mean, now that I know what to look for.

So I will have to ask Bob, W0AUS, to re-check his records.

 > and is the
> measurement doen as DBi or Dbd?

Yes.  :)

The results from 50 through 902 are in dBd, and the results from 1296 
through 24 GHz are dBi.  I don't know why they have been doing it this 
way, it predates my involvement in NLRS.  Perhaps Donn or Bob can 
comment on why it is done that way, perhaps Central States does it that 
way, and we use their test range to define "reference antennas".

But, since you mention it, I see that I *did* get that wrong for 902 in 
the published page: I listed it as dBi instead of dBd.  That was my 
error, not Bob's.

> Anyhow here is the
> link to the page for reference.  Please look into it. 
> Thanks.
> 
> 
> Link: 
> http://nlrs.dropboxone.net/AntennaGain/2003Au.htm

Sorry for the inconvenience.  I will fix the mistakes that I introduced, 
since I know what I did wrong and how to fix those.  I will mark the 
page so it is clear that we know something is wrong, but will otherwise 
leave it up so Bob can see it in its current erroneous condition and 
figure out what went wrong, then get me the corrected info.

Thank you for your sharp eyes!

73 de W0JT
John P. Toscano
Your humble (and eminently fallible) Webmaster