Radio Receiving

[joweetrd]

Hi I am using AM Futaba Attack T4VWD radio on my truck. I fond that the receiving is rather weak. Less then 30cm i get a lot of glitching sound even antenna on the Tx fully extended. Is there any way to improve or solve it thks!

[McFig]

Usually if there is glitching then either the the radio is not putting out a signal or the receiver is not getting the signal. Assuming that you have new batteries in the radio and a fully charged battery on the truck, we need to look at the receiver location and anntena.

I'm guessing its your receiver. Have to tried pulling the receiver out of the truck and make sure the anntena is sticking up, just for testing? It is possible your receiver is bad.

[joweetrd]

I just running the truck indoor(house) not a very big space the TX & RX is brand new.

[chiefsquattingmonkey]

run your antenna wire outside your body and wrap it around your rollbar. i gotway better rec3eption after doing this. i get about 50 yards or more on good batteries.

[Mouton]

There are several things to consider:
*Faulty crystals. Crystals are sensitive to impact damage and if either crystal is defective you will have a drastically shorter range.
* Receiver location and antenna placement. Keep both as far away from the motor, vibration unit and their respective wires. Your antenna wire should be straight and not wrapped in a small circle. In theory ESC can also generate noise that disturbs the transmitter, but I have not found the Tamiya MFU do be such an ESC.
*Keep in mind that even though your gear is new, it only takes one mistake to squeeze the receiver antenna. Make sure the antenna is not damaged.

[mcovalsk]

I just running the truck indoor(house) not a very big space the TX & RX is brand new.

Your receiver has a FI coil broken. I was repairing receivers during 10 years an I saw this many times even with new ones. The only way to fix this is the service.

Other possible reason although unlikely is that you are using crystals of different close channels, but I think improbable in a new brand.

[Arcocustom]

I just running the truck indoor(house) not a very big space the TX & RX is brand new.

There can be alot of RF noise or interference inside your house. Take the truck outside and perform a range check by turning on the truck and transmiter, set down the transmiter, carefully hold the truck, and walk away from your transmiter. Now see how far you can get before it starts to glitch. A dead main battery pack will cause glitching, so make sure your battery is fully charged.

[chiefsquattingmonkey]

mine gltches big time inside. outside i only get glitches in reverse. not sure as to why but i do.

[Suprachrgd82]

Cell phones, particularly Nextel, canl cause glitching.

A few tips to prevent glitching;

Never cut or modify the receiver antenna

Make sure the receiver antenna is not damaged

Mount the receiver and antenna as far away from servos, motors, ESCs, and wires as possible

Sandwich thick aluminum foil between 2 layers of servo tape to mount the receiver

Attempt to mount the receiver antenna as straight as possible. If coiling or wrapping is done, keep it evenly spaced, and never wrap/cross it back over itself. Mount it as high as possble.

Fully extend the radio antenna whenever using the RC

Keep cell phones away from AM RC electros, even when not talking

If there are any loose/rattling metal parts on the vehicle, secure them, tighten them, grease them, or wrap in shrink tube

Don't nuke a HotPocket and drive simultaneously. Don't yap on the cell while driving either.

Stay away from power lines. The area beneath them is an RF disaster