[NSRCA-discussion] RX choices

[Bob Richards]

I apologize! I did not mean to imply that all single conversion receivers are cheesy!  
   
  Bob R.
  

Ed Alt <ed_alt at hotmail.com> wrote:
  
Yep, I've been flying JR single conversion ABC&W sine the late 90's in quite 
a number of different locations around the country and have never, not once 
had the slightest indication of a problem. Lot's of time with ignition 
systems too. Must be some other cheesy single conversion receiver?

Ed

>From: DaveL322 at comcast.net
>Reply-To: NSRCA Mailing List 
>To: NSRCA Mailing List 
>Subject: Re: [NSRCA-discussion] RX choices
>Date: Thu, 14 Sep 2006 19:08:30 +0000
>
>"I've had too many glitches with the cheesy single conversion sets."
>
>HUGE word there is "cheesy". Good single conversion RXs are the only thing 
>I've flown in pattern and sport planes for the last 15 years and I've 
>enjoyed the benefits of a RX with fewer parts and lighter weight.
>
>I fly foamies in some pretty noisy environments and have found the single 
>conversion JR610 and Berg4 to be solid where others aren't.
>
>Regards,
>
>Dave Lockhart
>Team JR
>Team Castle
>DaveL322 at comcast.net
>
>
>
>
>-------------- Original message --------------
>From: Bob Richards 
>
>Most of what I use PPM receivers for are sport models or small electrics. 
>Even then, I have decided to stay away from the single conversion RXs, even 
>on the ultralight foamies. I've had too many glitches with the cheesy 
>single conversion sets.
>
>Having said that, there are advantages to some of the PPM receivers. With 
>proper filtering, it is possible for a PPM RX to continue operating with 
>certain interference that would render PCM inoperable. Not very likely, but 
>possible. I do know of one case where PCM radios were having problems going 
>into failsafe, but people flying PPM were not having problems. At one time 
>(years ago) I was told that PCM did not work well on planes with ignition 
>engines. I never disputed it, though I never have seen proof of it.
>
>With PCM, you may not know that interference is present until it goes into 
>failsafe, then it may be too late. With PPM, you may get glitches, but 
>usually at least some control gets through.
>
>I use the PCM RXs in my high-dollar planes, and have my failsafe set to 
>kill the engine. For most planes, I leave all the other controls at the 
>last good signal position.
>
>Bob R.
>
>
>Wayne wrote:
>I have a question guys.
>
>I see in lots of posts guys using FM (PPM) RX's. Why is this?
>
>In today's market there are so many choices of good PCM RX's I can't
>understand why someone would actually choose to run FM. Back in the days
>when I started RC there was no PCM and we had the choice of AM or FM. I was
>taught that my model was too important to me not to run the best link
>possible, at the time FM was it.
>
>When PCM came in the price was much higher and I can see a reason to not 
>use
>it. Today however both Futaba and JR have PCM RX's that are good for under
>$99, JR now even has one that PLL Synth. So why use FM?
>
>It is my understanding with today's PCM that noise rejection is so much
>better with PCM that it seems along with its F/S properties both model and
>people are better protected. I can see the reasoning among average modeler
>its price why else do MPI, FMA and so on make such a profit on off brand
>leads and servos that are in my opinion very sub par. I felt that in the
>pattern community with available models shrinking, and the cost of models
>hitting larger prices that guys would trust their baby to better equipment.
>I mean a basic pattern model that is on the cheap is going to be $1000 to
>$1500 all up. The difference in a 127 Futaba RX and say a Futaba 138DP PCM
>or JR 790 PCM version is about $40
>
>What am I missing?
>
>Wayne
>
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>From: Bob Richards 
>To: NSRCA Mailing List 
>Subject: Re: [NSRCA-discussion] RX choices
>Date: Thu, 14 Sep 2006 18:47:21 +0000
>_______________________________________________
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