modifying Spectrum rx antenna

[JustinONE]

Just wondering if anyone modified your JR Spectrum antennas for improved reception, or lengthened for use in Carbon planes?

Not Instead of buying a whole new Spectrum Rx as I would like to know what is required to lengthen the antenna whiskers. Any specs would be appreciated.

Thanks

[Ron W3FJW]

You can use a short length of good quality coax with the Rx end soldered to the antenna pad and the shield soldered to Rx ground. Strip ~1.2 inches of the shield off the other end for the antenna portion.

[JustinONE]

is there a limit to the entire length of coax?
such as one antenna is 12" long and the other 24" long? I realize it's just the end of the coax that is trimmed to expose the center wire.

[Ron W3FJW]

That's going to depend upon the characteristics of the coax but for all practical purposes I would keep it as short as possible to avoid signal loss. Try the 2 feet length & see how it works out.

[beer-man]

I have not tried this, but I would think the coax and antenna from an old laptop would work. check local repair shop, my last job we though out tons of them when replacing the displays