Advice on Ready to Run (RTR)  model radio frequencies


Today there are an increasing number of cheap (RTR) ready to run model boats and cars on the market. These may be fitted with 27MHz, 40MHz or even 2.4Ghz radio systems.


2.4Ghz type RTR sets

The 2.4Ghz types should not affect our models or be affected by our radios as the technology used on 2.4Ghz should prevent a frequency clash..


Short range 27MHz & 40MHz RTR sets

One way to identify these short range sets is that the transmitter is normally smaller than our standard size transmitters and normally has only a very short piano wire type aerial.


You will find that these RTR short range radios will probably just be marked up with just a 27MHz or 40MHz sticker or label. They have no precise crystal frequency control and may operate all the way across the frequency band they are marked for.


These radio transmitters transmit at very low power and have a very short range of about 30meters maximum. The power output is much lower than our standard radio control systems.  This means that it is likely that our standard radio output will swamp these low power radios and cause them interference


These short range types should not affect our frequencies unless your model happens to be very close to their transmitter.


Full range 27MHz & 40MHz RTR sets

Some RTR models will have a standard size transmitter with a standard size aerial and these will have a similar range as our own transmitters and may also be fitted with crystals. (Note; these may be fitted internally and not interchangeable)


These RTR sets typically operate on the following range of frequencies.

 27.145MHz (Yellow), 40.665, 40.675, 40.685, and 40.695MHz. Although this list is not exclusive.


These types WILL affect our frequencies and members should look out for these and take appropriate action if they encounter one being put into use.


Recommendations

We advise members not to use these RTR radios and if they encounter anyone else using one to check with them and explain the potential problems.


If the operating frequency can be determined precisely by labels on the radio or crystals, or alternatively by an electronic a frequency checker then this frequency should be avoided if the RTR model is in use or is likely to be use by others.


If the frequency peg board is in use then it t is also recommended that the peg for that frequency be removed so as to prevent its use by our members.
















A printable PDF copy of the above words is available on our

Club Reference Documents page