ORIGINAL: jaymen
Just found this out:
Turns out Jerry Pullen could hold his own at the bar as well as designing proportional radios. He's alive and well somewhere in Texas the last we heard, and off the bottle.
It is interesting that Dunham, Mathis, Pullen, Weirick, Spreng, and a few others where very heavy drinkers. I think this limited their careers at the time in R/C, and was a factor in why others who followed them were able to surpass them. I'm told by those who knew them that they all were very talented individuals as well.
Bob Dunham had a Cessna 172 Skylane(not a model) that he flew, so Cliffy, Phil, Bob, and Zel were all licensed pilots as well.
Now this is the kind of information that's makes them real people - instead of just names in the story of digital proportional development!
(BTW, a 172 is a Skyhawk and a 182 a Skylane, but I'm sure you knew that!)
I think you must have misunderstood my post - the Futaba R-114 doesn't work with either my M.A.N. 2-3-4 or Blue Max TXs, both World Engines radios. I'm pretty sure the pulse width is different; it functions only on the first channel (aileron.) On the other channels, the servos drive to one end.
The R-114 does work perfectly with my 1966 Citizen-Ship DPT five channel TX, which certainly qualifies as a first-generation system. It also works great with a 1969 Pro-line Competition Six TX and 1970 MRC-Futaba F-700 TX. The only drawback is slightly more servo travel clockwise, which Highplains pointed out - didn't notice myself.
I'll leave it to you radio experts to enlighten me, but I thought the positive/negative pulse was between the decoder and servo amp. The RF link, AM as we are talking about here doesn't have a positive or negative, or so I believe...I think the schematic I have somewhere for the Citizen-Ship servo show a negative signal pulse, while the MRC-Futaba servo is positive...either way, both of these transmitters fly a modern Futaba R-114 AM receiver with S-3003 servos just fine. I thought the Ace R/C pulse inverter was so you could use different brands of servos.
Of course, modern FM receivers are positive or negative shift, but that is an entirely different matter.
Great info Jaymen, keep it coming! I didn't know about pushing the trim down on the Bonner sticks. Russ Farris