Re: Which receiver do you use?

andrew Mon Jan 13, 2020 11:49 pm

CYPRESS Technology announced that the CTRF6936 chip which the Spektrum DSM2/X

, Lemon and Orange compatible receivers relied on was End-of-Life and would no longer be manufactured. As such, Spektrum and Lemon were left scrambling to find a replacement chip for their receivers. Spectrum elected, I believe, to use Texas Instrument's CC2650 which combined microprocessor and RF functionality on the same die. Lemon selected a different chip from a different vendor using SDR (Software Defined Receiver) protocol based on firmware loaded onto the chip itself.

With the change to newer chips and the improved die designs, both Spektrum and Lemon have benefited from improved performance. DSM2 and DSMX are trademarks registered to Horizon Hobbies and refer to the frequency agility that allows multiple TX/RX pairs to operate in close physical proximity in the 2.4GHz spectrum. Lemon's new protocol is DSMP (I don't know what Spektrum is calling its new protocol), but both are backwards compatible with DSM2 and DSMX transmitters. Consequently, Lemon is dropping all of their DSM2 only products.

That being said, I've used Lemon receivers almost exclusively for several years with no problems (dumb thumbing excluded). With the movement forward to DSMP protocol, all Lemon receivers are classified as full range. At $8.50 each, 6 channels and 3.8 grams, they're hard to beat.

--Oz-- Fri Feb 17, 2023 8:22 pm

I prefer expresslrs protocol, mainly because low latency, going from the old 60hz to 110 was night and day, now moving to 250hz is another improvement, I did not notice going to 500hz. When going back slower, you wonder how you even put up with the delay. Also cost, size and weight are great.

Here is a couple for quads or planes with a FC, around half gram. Under $15 each.
The Rx with [wm is under 3g w/o the case.

Which receiver do you use? - Page 3 Ulrs_r10

--Oz-- Fri Feb 17, 2023 8:28 pm

andrew wrote:CYPRESS Technology announced that the CTRF6936 chip which the Spektrum DSM2/X, Lemon and Orange compatible receivers relied on was End-of-Life and would no longer be manufactured. As such, Spektrum and Lemon were left scrambling to find a replacement chip for their receivers. Spectrum elected, I believe, to use Texas Instrument's CC2650 which combined microprocessor and RF functionality on the same die. Lemon selected a different chip from a different vendor using SDR (Software Defined Receiver) protocol based on firmware loaded onto the chip itself.

With the change to newer chips and the improved die designs, both Spektrum and Lemon have benefited from improved performance. DSM2 and DSMX are trademarks registered to Horizon Hobbies and refer to the frequency agility that allows multiple TX/RX pairs to operate in close physical proximity in the 2.4GHz spectrum. Lemon's new protocol is DSMP (I don't know what Spektrum is calling its new protocol), but both are backwards compatible with DSM2 and DSMX transmitters. Consequently, Lemon is dropping all of their DSM2 only products.

That being said, I've used Lemon receivers almost exclusively for several years with no problems (dumb thumbing excluded). With the movement forward to DSMP protocol, all Lemon receivers are classified as full range. At $8.50 each, 6 channels and 3.8 grams, they're hard to beat.

For spectrum users (not me), this has got to be some really good news for them, over the years I have seen a hundred spectrum planes crashes at my field all in the spectrum "hole" of our field, glad to see the change.

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