04-30-2008, 07:49 PM
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#267 (permalink)
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| Gettin' Lower!
Join Date: Mar 2008 Location: San Juan ,Puerto Rico
Posts: 38
| Re: Kiwi's XPS test results are up. | Quote: Originally Posted by XJet | | | | | | Sometimes the only way to test for certain conditions in a repeatable scenario is to emulate potential "real-world" situations on the bench. You don't do that?
I strongly disagree.
Have you actually determined if this is due to sidebands on the 2.7GHz signal or simply front-end overload in the receivers?
That's odd -- because testing seems to indicate that XPS *does* continue to transmit, even when noise levels far exceed the -36dB you quote. Does that mean you're not FCC-compliant?
Are these "real world tests" related to the ones you did before claiming that a transmitter dipole was completely unnecessary?
You keep making this claim and I continue to refute it. Your "real world" seems decidedly different to the one I live in and the one that many folks have to fly in Jim.
And if XPS's hopping algorithm is so good -- why, in the tests conducted here, did XPS stop working when JR/Spektrum and FASST coped without any problems? This must surely be the single most important question that needs to be answered. You won't try to dodge that one will you?
Please tell me where we can see the 3-dimensional plots of this pattern. I've asked for this data from you I don't know how many times but all you've offered is the 2D plots from Maxstream. If you now have that data (which you seem to be claiming) I'm sure we'd all like to see it for ourselves -- otherwise it's hearsay.
So how do you cope with shadowing in a large model where it's impossible to position the receiver so that the signal isn't going to be blocked by a major metal or composite structure from some angles. The antenna's radiation pattern doesn't matter one sack of beans if it's shadowed and the same goes for resending the data. If the receiver remains in the shadow, it will not receive the data and it's "lockout time".
Why don't I believe that this is the sole reason?
So what you're saying then (if it's not diversity) is that the secondary receiver(s) will not function unless the primary receiver fails (otherwise it *is* diversity).
Will you be able to run telemetry *without* a satellite receiver?
Can you give us a timeline?
Can you also elaborate on the situation in Europe? Graupner appears to have been giving quite a few refunds and taking back XPS gear with increasing regularity there. Are there special issues in this market? | | | | | OUCH!! right on brother !!!!  ...where did he go... |
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