longueur antenne R149DP en 35 MHz

[GLADUS63 0]

Bonjour,

Est que quelqu'un connaît la longueur d'antenne pour un recepteur R149DP en 35 MHZ ?

à priori (sans adaptation) à lambda sur 8 on obtient 107 cm, mais je n'en ai pas de neuf pour mesurer

1.07 = (299 792 458 / 35 000 000)/8

merci

Cedric

[helicoool 2]

J ai mesuré exactement 96 cm depuis la sortie du boitier .

[GLADUS63 0]

Merci ça confirme ce que je viens de trouver : longueur du fil jusqu'à la platine :

Repair with multi strand (say 45g) flexible wire and select Receiver Antenna lengths as follows:

Futaba Receivers have many various lengths ex factory. Factory replacement antenna (aerial) part numbers and lengths are available as follows:

500mm as parts #0131 AM/FM27, #0133 AM/FM29, #0134 AM/FM40

for Futaba 2ch RX = short range use for cars/boats

500 mm (19.6") for R303FHS, R113F & R113iP RX all frequencies,

485 mm (19") for R152JE all frequencies,

495 mm (19.4") for R203HF all frequencies

700 mm (27.4") for R114F all frequencies

985 mm (38.8") for R148DF, R148DP, R149DP,

1000mm (39.4") as parts #0135 AM27 R102JE (long range) #0136 FM35, #0140 AM/FM29 (4ch+), #0141 AM/FM40 (4ch+), #0142 FM35 = R129DP, R137/9), FM 72 MHz R127DF, R138DP,

1100mm as part #0146 for FM40 = 118G, 137GP, 139GP

1200mm for FM40 = R137/9.

JR =

JR use 1000 mm for all their known RX so it is the same length for 35MHz, 36, 40 & 72 etc. The receiver has an input inductor that matches the wire antenna to the RF circuits.

Hitec = Base loaded to following lengths irrespective of frequency.

#58011 1060 mm = A black Antenna (aerial) wire & doubler for aircraft receivers. 106cm = 41.75 inches from pre-tinned tip to end. Used for all Hitec RCD airborne RX, irrespective of frequency, except the HFS-05MS and Neutron 6 which are shorter at 60 CM (23 5/8

inches) and the discontinued original red cased 4ch Feather as follows:

#54001 Green for use with red cased Feather 4CH receiver [lighter wire than #58011 but still 106 cm (41.75 inches)]

#54002 Red Antenna (aerial) Wire, with doubler, for Regular Surface Receiver which measures 61 CM (24 inches) as now fitted to current 27, 29 & 40 mHz surface receivers with the exception of the HIS-03MK IPD receiver which has an antenna length of only 43 cm (17 inches).