Originally Posted by ka8jvx

He can scrap the two receivers he has if he wants to. I sent 2 new ones with the transmitter I sent him. At least let him use the 72 mhz equipment before telling him he needs 2.4 ghz.

Originally Posted by ka8jvx

I have never seen a 36 mhz transmitter. What kind of antenna does it have? Does it have a coil for loading in it?

Originally Posted by jester_s1

I see that you're from the home of the unabomber, so here is a list of clubs within driving distance you might consider.

[TABLE="width: 700"]
[TR="bgcolor: #F7F6F3"]
[TD]BRAUERS AVIATORS
Flying Site Details
0.00 miles
[/TD]
[TD]1612
[/TD]
[TD]47
[/TD]
[TD]DAVID RACZKA
Email Contact
[/TD]
[TD]Phone: 716-684-2122
Visit Website
[/TD]
[TD]2
[/TD]
[TD]Yes
[/TD]
[/TR]
[TR]
[TD]LAKE ONTARIO R/C FLYERS
Flying Site Details
7.27 miles
[/TD]
[TD]3898
[/TD]
[TD]31
[/TD]
[TD]ROSS NIVER
Email Contact
[/TD]
[TD]Phone: 716-778-7194
Visit Website
[/TD]
[TD]2
[/TD]
[TD]Yes
[/TD]
[/TR]
[TR="bgcolor: #F7F6F3"]
[TD]BROOKFIELD R/C FLYING CLUB
Flying Site Details
8.51 miles
[/TD]
[TD]4661
[/TD]
[TD]20
[/TD]
[TD]WILLIAM MARFURT
Email Contact
[/TD]
[TD]Phone: 716.741.1154
Visit Website
[/TD]
[TD]2
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]NIAGARA COUNTY RC MAC
Flying Site Details
9.22 miles
[/TD]
[TD]747
[/TD]
[TD]35
[/TD]
[TD]RICHARD BATTAGLIA
[/TD]
[TD]Phone: 716-741-4875
Visit Website
[/TD]
[TD]2
[/TD]
[TD][/TD]
[/TR]
[TR="bgcolor: #F7F6F3"]
[TD]WING AND ROTOR OF WESTERN NEW YORK
Flying Site Details
14.04 miles
[/TD]
[TD]2477
[/TD]
[TD]60
[/TD]
[TD]MARK RAWLS
Email Contact
[/TD]
[TD]Phone: 716-838-4291
Visit Website
[/TD]
[TD]2
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]NIAGARA SUNDAY FLIERS, INC.
Flying Site Details
15.08 miles
[/TD]
[TD]779
[/TD]
[TD]26
[/TD]
[TD]DIANE LETOURNEAU
[/TD]
[TD]Phone: 716.297.0229
Visit Website
[/TD]
[TD]2
[/TD]
[TD][/TD]
[/TR]
[TR="bgcolor: #F7F6F3"]
[TD]WNY SAILPLANE&ELECTRIC FLYERS
16.49 miles
[/TD]
[TD]1883
[/TD]
[TD]31
[/TD]
[TD]ANDREW LUCHOWSKI
Email Contact
[/TD]
[TD]Phone: 716-662-0505
Visit Website
[/TD]
[TD]2
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]RC PULSERS OF WESTERN NY
Flying Site Details
17.91 miles
[/TD]
[TD]476
[/TD]
[TD]57
[/TD]
[TD]RICHARD PRATT
Email Contact
[/TD]
[TD]Phone: 716-683-6632
Visit Website
[/TD]
[TD]2
[/TD]
[TD]Yes
[/TD]
[/TR]
[TR="bgcolor: #F7F6F3"]
[TD]RC AIRCRAFTERS OF W.N.Y.
Flying Site Details
22.95 miles
[/TD]
[TD]925
[/TD]
[TD]62
[/TD]
[TD]ANDREW BROSE
Email Contact
[/TD]
[TD]Phone: 716-400-2265
Visit Website
[/TD]
[TD]2
[/TD]
[/TR]
[/TABLE]

Originally Posted by jester_s1

Why is it that every time someone asks about radios we have to have this 72mhz vs. 2.4ghz conversation again? 72mhz equipment isn't even being made anymore. That's how much the community has embraced 2.4ghz technology and how good the newer equipment is. Yes, there are a few older guys who were happy with 72mhz before and are still happy with it now, much the same as there are a few older guys who drive carbureted vehicles even though fuel injection makes an engine so much more efficient and trouble free. The OP got a 72mhz radio for free so he should use it (assuming it passes a thorough range check). When he's ready to invest in more capable radios, he should buy 2.4ghz (actually will have to buy one unless he goes the very used route). That's really all that needs to be said on the matter IMO.

Originally Posted by toolmaker7341

Hey John could you please ask your young whippersnappers how to reverse a non-programable digital servo. On anolog servos you reverse the 2 outer wires on the pot and the +- on the motor. The digital ones I have now have white and black on the outside of the pot and red in the center.

Originally Posted by AMA 74894

hey Mike.. What servo specifically? I know some digital servos have magnetic or optical feedback circuits, or have the motor soldered directly to the board, (in all of these cases you're out of luck reversing with a soldering iron)
although you could get a pair of 'budget minded' programmable digital servos.

Originally Posted by toolmaker7341

They are EXI from Hobby Partz. They appear to have a normal pot. The motor is not wired to the board red+ black- white to motor case

Originally Posted by rgburrill

Going to 2.4 GHz doesn't have anything to do with how good it is. It is simply a matter of cost. There is no reason that 72MHz could not have frequency hopping, spread spectrum technology. Nor is there any reason that 2.4GHz couldn't have stayed with the PPM/PCM technology. Both FREQUENCIES have their inherent issues - neither is BETTER. It's the use of better RF modulation techniques that makes it BETTER. The 72MHz wavelength doesn't lend it self to highly integrated circuit transmitter/receiver/processor technology. That means it will be bigger, use more power and most importantily, cost more in large production runs. It's not the fact that it's 2.4GHz that gives the protection and versatility of the new radios, it's that it can be integrated into a cheap chip.

Originally Posted by dirtybird

There is a good reason you can't have spread spectrum on 72. You don\.t have the necessary bandwidth. On 72 you are limited to 10kc. On 2.4 you have a bandwidth of 400mh. Thats more room than 72 is from 0.
In a previous post I listed disadvantages of 72. Please tell me of the ones you dont agree with and why.

Originally Posted by AMA 74894

hmm, in that case, you should still be able to swap the 2 wires to the motor and the 2 outboard wires on the pot. (leaving the center wire on the pot as it is)
Jester IS right tho..
Check this thread:
http://www.rcuniverse.com/forum/tips...d-servo-2.html

Originally Posted by Sport_Pilot

You cannot have spread spectrum but you can have frequency hop. Also a lot of the old shared bands for phone pagers are no longer or little used, they could be brought (or is it bought?) in to be used for spread spctrum. About using more prower, I think that we basically abandoned 72 about the time designers were designing the next generation of digitally controlled radio gear for all products. Thus there were no erricient new designs for 72.