RCU Forums - View Single Post - Range issue, could use some help
View Single Post
Old 04-05-2005 | 06:17 AM
  #23  
Silver182's Avatar
Silver182
My Feedback: (2)
 
Joined: Dec 2001
Posts: 1,095
Likes: 0
Received 0 Likes on 0 Posts
From: Littleton, CO
Default RE: Range issue, could use some help

ORIGINAL: seanreit

Ok, I have narrowed it down. I switched crystals, switched receivers, switched transmitters etc. All having the same effect. Then I simply unplugged everything but the elevator, no effect elevator sits there and jiggles a little bit and sometimes had to do with my personal proximity to the model.

Then I grabbed a hitec receiver and pluged a battery in it and a digital servo and started waving the receiver all around the model while my transmitter sat on the table across the room (on).

No servo glitch no nothing till I started waving it around the control panel I built (for photo you might need to go over to isobar build thread. This is the first time I've used a clippard brake valve, but on that panel I have the following and I could not narrow it down to each item (but I will when I start taking them out of the panel one at a time). I have there a robart retract valve, a small hitec 85 bb metal servo, a hitec 5645 digital servo to hit the BVM made clippard control deal for brakes. I also have a jetcat fuel filter on my propane line (which I did notice the glitch happened for sure when I touched the filter with the hitec receiver) I also have my propane solenoid and fuel solenoid on that panel. I'll see if I can get a pic up of this tomorrow evening. I may be able to post some video as well. But it appears I have some RF stuff coming off this panel for sure cause if I put the receiver on the ass of the airplane, no glitch no nothing.

And yes, I had the ant. installed as per my old Isobar, a loop forward towards the nose, and looped around and back so the whole ant. was in the nose, however, that was the first thing I pulled out when I failed, I put that ant in every direction but up as Wocket suggested. I know it is an older style receiver, but it has been sent to JR and was tuned to my module, but, something about two receivers on different channels suggests it's THIS install rather than anything else as I've indicated above.
Sean... what is the baseline distance? is the range degradation because of on board equipment or rec. antenna location or both? I don't believe you ever stated that you measured and established a baseline distance. You must first establish that your baseline distance is within the normal range, 50 paces (about 150 feet I assume) is not good enough!

Then after you establish the fact that your baseline is within normal range, go directly to rec. antenna placement. Hang the receiver antenna out of the airplane as far as possible and do a range check, is there a difference now? Receiver antenna and pump location should be as far apart as possible! I would be surprised if the receiver antenna re-location wouldn't make a big change. Keep in mind no more than a 25% degradation from baseline..
Lee