Newbie Northumberland First Screen shot

[pcochrane12]

hi gary
yep missing out a little bit :-(
cheers paul

[besty]

Hi Gary from my home position at about 105 I've nothing really down to sea level at H/pool then round towards 150 I go over the top of the Cleveland Hills. It's a bit of both, I'll do  a polar diagram with the pre amp disabled to give you a comparison if you want.

I've started the new polar diagram for comparison, give me 24 hours or so to get a good plot.

Stuart

[GrimReaperuk]

Stuart,

Thank you for the info and look forward to the shot without the preamp on.  Question:  I take it if the Bias-T is unpowered it acts as a DC Block still?

Regards

G

[besty]

Gary I'm not sure about that but I'm sure someone on here will know. The aerial I bought has a dc short across the n type connector too so I think that helps.

Polar diagram looking smaller but not too bad so far.

Stuart

[besty]

hi Gary,
Here is the polar diagram with the preamp bypassed, it looks to me that the preamp is in fact doing a good job of boosting my signal.



http://farm4.static.flickr.com/3658/3441095988_fea2265033_o.jpg

hope you find it useful

Stuart

[GrimReaperuk]

Hi Stuart,

Thanks for taking the time to do this.  Interesting result, but leaves the question of; is it compensating for the coax length or does it pull in all that extra mileage (rhetorical question so no need to answer).  Looks like I may have to stage my approach to this.

Regards
G

[pcochrane12]

g
if it helps with the wimo system when my pre-amp went down i noticed virtually no difference with my polar ring possibly 10-15miles in difference but the message count and aircraft list was no sig difference
paul