Futaba Attack Sport

[michael harper 2]

Hi,

I have a Futaba Attack Sport FP-2NCR 2channel set that I bought in the 70's. 27.255 MHz frequency.  Is it possible to still use this ? . I wondered if it could be used in a sailing yacht if not in an aircraft.

 

Cheers

[John Lee]

BMFA Handbook has the answers:

 

7.2      The 27 MHz Band

(a)  Identification is by coloured ribbon attached to transmitter aerial in the colours as listed when using 20 kHz spacing and a   white flag with channel number in black when using 10 kHz spacing..

(b)  The channel spacing on this band is 10 kHz and all modern sets, with the CE mark, should meet this specification. However, many older specification sets are still in use and these have a minimum channel spacing of 20 kHz. This situation will remain for a number of years so if you are operating narrow band 27 MHz then be aware of the danger.

(c)  You must not use an old 20 kHz split crystal in a new set. Even if you wish to transmit on the same frequency, a new narrow band crystal will be required in a narrow band set.

(d)  The 27 MHz band is legally shared by other users, in particular, model cars, model boats, citizens band operators and an increasing number of radio controlled toys. It therefore cannot  be recommended for use by airborne models.  In fact many clubs have already found it necessary to ban it completely.

(e)  If you really must use it take great care particularly near urban areas and remember when you fly a model aircraft you are personally responsible for the safety of the flight.  So think very carefully before proceeding because of the many sources of potential interference..

Channel	Frequency	Old Colour	Channel	Frequency	Old Colour
1	26.965		17	27.125	Orange-Yellow
2	26.975	Black	18	27.135
3	26.985		19	27.145	Yellow
4	26.995	Brown	20	27.155
5	27.005		21	27.165
6	27.015		22	27.175	Yellow-Green
7	27.025	Brown-Red	23	27.185
8	27.035		24	27.195	Green
9	27.045	Red	25	27.205
10	27.055		26	27.215
11	27.065		27	27.225	Green-Blue
12	27.075	Red-Orange	28	27.235
13	27.085		29	27.245	Blue
14	27.095	Orange	30	27.255	Blue
15	27.105		31	27.265
16	27.115		32	27.275	White or Purple

 

[Paul De Tourtoulon]

It an AM radio, at least 20khz spacing and it won't like an electric motor.

[Geoff S]

Most people used 27Mhz 2 channel radios when I was model yacht racing - probably because the 1 metre class rules are limited to 2 channel control.  That was some years ago. I think most would be on 2.4 ghz now if only to avoid the need to swap channels to avoid clashes in races.  Not sure if I'd use 27Mhz in an aircraft because of potential interference.

[Brian Cooper]

It will be absolutely fine. 

 

I still use 27 Mhz in (electric power) R/C cars. . I have four of them, all on Futaba 2-channel AM radios, and all on different colours (freqencies).

The grandchildren play with them extensively during school holidays. 

 

There is no interference from the other transmitters or from the electric motors. 

 

It's old radio but it still works.  

[Paul De Tourtoulon]

29 minutes ago, Brian Cooper said:

 

There is no interference from the other transmitters or from the electric motors. 

 

 

With an old brushed motor with the antiparasite kit or Brushless ?.

[Simon Clark]

Back in the '70s, I used to race electric cars with Futaba 27MHz am gear. The motors were brushed, often with worn out brushes casuing a lot of sparking and none of them had any suppression components fitted at all. The only time I ever got any interference was when someone else turned their transmitter on, on the same frequency.

 

It should be fine!

Simon

[Brian Cooper]

1 hour ago, Paul De Tourtoulon said:

With an old brushed motor with the antiparasite kit or Brushless ?.

 

Two have brushed motors with "sparky" mechanical speed controllers which are worked by a servo. 

The other two have brushless motors with electronic speed controllers. 

 

None of them experience any interference. 

 

The radios are perfectly okay for models which don't go airborne. 

[gangster]

Nice radio it will be fine. I have an M series 2 channel in a Tamya buggy no issue with noise. It’s what they were meant for no doubt millions were in electric cars and boats

[michael harper 2]

Thanks for all the replies. Will look at fitting it in a International 1 metre or a Racing Sparrow boat. Safer to have it on water than flying in the air.

 

Cheers