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HomeRC & Power✈️Aircraft🚁HelicopterRadio - Futaba FASST › Replacement antenna for R7008SB
04-02-2020 08:50 AM  53 days ago
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Olorin5

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Taupo, New Zealand

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Replacement antenna for R7008SB
Just wondering if anyone can help me with a part number for a replacement antenna for the R7008SB Rx. I‘ve come up with A15806 but the cable looks a bit different and just wondering if it is the correct item. Thanks.
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04-02-2020 09:25 PM  53 days ago
Rojoalfa

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Punta de Mata, Monagas-Venezuela

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No problem for futaba antennas.

You can use it.
The main concern is the connector and they are all the same.

Remember doing range check before flying...

/
Saludos cordiales,
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04-03-2020 03:10 PM  52 days ago
wjvail

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Meridian, Mississippi

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Olorin5 Just wondering if anyone can help me with a part number for a replacement antenna for the R7008SB Rx.
I'm sorry - I don't have a part number but I did just go through the process of replacing the antenna on my receiver. I had a small mishap that resulted in a small fire that singed the antenna.

The good news is that FutabaUSA was able to get me going again for pennies. The antenna is a consumer serviceable part and FutabaUSA can sell them for you to install. I ordered 4 and I think the bill was under $5. Maybe it was $10 - I don't remember.

Write Futaba. There is a phone number provided but I've had much better results writing. Contact info:
http://www.futabausa.com/repairs
256-461-9399 x418
Skylar McDaniel

"Well, nothing bad can happen now."
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04-03-2020 05:01 PM  52 days ago
wjvail

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Meridian, Mississippi

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Oops... I just noticed you are in New Zealand. FutabaUSA might be less valuable to you. Possibly contact your region's service center?"Well, nothing bad can happen now."
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04-03-2020 07:54 PM  52 days ago
helitom

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Pine Grove, Calif, USA

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You can buy generic 2.4G receiver antennas from eBay very cheap as well. When buying a non-Futaba provided replacement antenna the only thing you have to be aware of is the antenna wire length.

The receiver end of the antenna assembly snaps onto the connector inside the receiver case which seems to be a standard connector. It is a simple snap off/on to remove or connect. The total antenna assembly itself can be of most any length keeping in mind the following. The antenna assembly is a coaxial wire that additionally has a plastic covering on it. The important part to know is that the actual antenna wire is the inner portion of the coaxial assembly and is only the portion of wire that protrudes beyond the coaxial sheathing. For Futaba the portion that protrudes needs to be 30mm long from the coaxial sheathing departing point to the wire end.

So, when buying generic replacements measure carefully and snip off anything that protrudes the coaxial sheathing by more than 30mm. If the generic replacement has less than 30mm protruding you will have to skin back the coaxial sheathing. Skinning back the very, very small coaxial sheathing requires patience, will power, and profanity, but it can be done.

Finally, the plastic covering has nothing to do with the reception quality of the antenna. I have seen some of the Futaba provided replacement antennas that additionally have a short length of heat shrink covering the section of the antenna assembly where the antenna wire leaves of the coaxial sheathing. That heat shrink makes it appear that much less than 30mm of antenna wire is exposed. However, if you look very closely you will see a bump in the heat shrink that is 30mm back from the antenna wire end. That bump is where the antenna wire leaves the coaxial sheathing. The heat shrink has been applied to reduce the possibility of the antenna wire breaking off due to friction between the antenna wire and the coaxial sheathing end point.

Finally, and as mentioned above, do a thorough range check before the maiden flight following any antenna replacement, be it Futaba provided or a generic.
The older I get, the fewer things seem worth waiting in line for.
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04-04-2020 08:47 AM  51 days ago
modtron

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Oxford. UK

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Why not just get the correct item from Futaba in Australia ?
http://www.rcwholesale.com.au
No questions then as to "is it the correct length" or "is it the correct item"

modtron
Oxford UK
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04-05-2020 12:01 AM  50 days ago
Rojoalfa

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Punta de Mata, Monagas-Venezuela

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Well, the key is to have several choices... Then Cost, delivery time and quality is going to move you to the next step.

Pick one and it is enough!

/
Saludos cordiales,
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