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2m & 70cm FT8 - Frequency stability?

R P All Messages By This Member #113156 Does anyone have experience of using the FT-817 on V-UHF FT8? If so, how do you find the frequency stability? Apparently, for FT8 you would need less than?0.5 Hz/second drift to be successful.? Real experiences appreciated, knowledge of retro-fitted TXCO and GPS devices welcomed :)
Pietro Molina All Messages By This Member #113159 I'm using a FT818. With a transverter?when using QO-100, and a chip SDR to receive. The only problem I never had is with a LNB without TXO...? Trust in it Pietro I2OIM toggle quoted message Show quoted text Il giorno gio 13 ott 2022 alle ore 09:36 R P <trunky@...> ha scritto: Does anyone have experience of using the FT-817 on V-UHF FT8? If so, how do you find the frequency stability? Apparently, for FT8 you would need less than?0.5 Hz/second drift to be successful.? Real experiences appreciated, knowledge of retro-fitted TXCO and GPS devices welcomed :)
Chris Maness KQ6UP All Messages By This Member #113160 I have heard you do need the TCXO for VHF/UHF.? I don't think you do for HF as I am running it even with WSPR it seems to work fine on HF.? However, the Chinese knock offs generate more phase noise. 73 de Chris KQ6UP
Zack Widup All Messages By This Member #113162 I have been using an FT817ND as an IF rig for the microwave bands on 144 and 432 MHz. I do not have the TCXO installed. I have never had any problem with its stability or accuracy. 73, Zack W9SZ toggle quoted message Show quoted text On Thu, Oct 13, 2022 at 8:16 AM Christopher Maness <christopher.maness@...> wrote: I have heard you do need the TCXO for VHF/UHF.? I don't think you do for HF as I am running it even with WSPR it seems to work fine on HF.? However, the Chinese knock offs generate more phase noise. 73 de Chris KQ6UP
Ivor Wilkinson All Messages By This Member #113165 开云体育 My FT817ND does drift slowly on 2 meres, but this is manageable. I don't use it on 70cms FT8 toggle quoted message Show quoted text ------ Original Message ------ From: "R P" <trunky@...> To: [email protected] Sent: Thursday, 13 Oct, 22 At 08:36 Subject: [ft817] 2m & 70cm FT8 - Frequency stability? Does anyone have experience of using the FT-817 on V-UHF FT8? If so, how do you find the frequency stability? Apparently, for FT8 you would need less than 0.5 Hz/second drift to be successful. Real experiences appreciated, knowledge of retro-fitted TXCO and GPS devices welcomed :)

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