[NSRCA-discussion] 89 Nats

[DaveL322 at comcast.net]

9VAP, or 9VAP?  (I think a VAP).

89 was the last year I flew brand "F" - and I was flying the old 8 channel 512 PCM, which was flawless.

And while I don't recall the exact number of crashes (1 is believable), I know of one plane which did crash and that TX had gotten absolutely soaked earlier that day or the prior day in a rainstorm during a practice flight - I saw easily 1-2 oz of water dumped out of the TX at the end of the practice flight.

Dave

-------------- Original message -------------- 
From: "Dennis" <patternpilot at verizon.net> 

> Ok, for those that are still interested in what caused the radio 
> interference at the 89 Nat's, here is what Bill Bowen sent me. 
> 
> Denny 
> 
> After I got home last night I checked my old files on the Futaba lock 
> out problem at the 89 Nat's. The problem was with the 9VAL system, 
> specially their new 1024 receivers. Interesting though there was only 
> one crash and everyone else regained control as the plane got low 
> enough. As I mentioned I loaned them all six of my 8 channel PCM 512 
> receivers which were on 6 meters. Steve Helms brought a team of 6 folks 
> in and did extensive testing twice. What they found was two areas at 
> Vista field where high reflection from buried metal and was quite 
> noticeable in the receivers. They deduced that the rejection 
> sensitivity was not only two small, but the logic for rejection took too 
> long to determine it was OK after the interference left. Helms flew his 
> plane all around for days at Vista and could not repeat the situation, 
> but it was in September and much cooler than during the Nat's. They 
> recalled all of the 9VAL receivers and repaired them for nothing. 
> Somewhere I still have a T-shirt that says "I survived the 1989 Nat's 
> Lockout"". 
> 
> Bill 
> 
> 
> 
> Dennis Cone 
> 
> 
> 
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