Have a blackjack 29 v3, sk120 esc, had 2 runaways with it (had it set up to shut down without receiving signal from transmitter) just kept on going. luckily was able to retrieve it. Once the next day, with a boat, across the lake and no one found it.
Anyways, decided to change receivers from sr315 to sr215 sprectrum. And low and behold the antenna for the sr215 is way shorter by about 4inches. From where it's mounted about a 1/2 inch would protrude into the antenna tube. Seams like I would lose all control in a short distance. Is it possible to lengthen the antenna? or just get order a sr315 and be done with it?

Thanks,
John