开云体育

v2 hardware changes from model shipped on 4-17-23 and birdies on receive

Steve N3KDN Clearwater Florida DMRID # 3115569 All Messages By This Member #103068 hello I got a v2 model from a ham that was bought on 4-17-23 built..I am curious if any hardware changes were done to the v2 for the hamvention release..Mine seems to have a lot of birdies in the receiver across all bands regardless of different antennas tried..did the swr bridge calibration and rf calibration..any ideas or suggestions?
Ashhar Farhan All Messages By This Member #103069 The sbitx does have spurs but they are all well below the band noise (when the antenna is connected). If you have spurs, you might want to check with a different power supply. There are no hardware changes at all to any sbitx v2. - f toggle quoted message Show quoted text On Sat, Jun 17, 2023, 6:25 PM <stevegrass8@...> wrote: hello I got a v2 model from a ham that was bought on 4-17-23 built..I am curious if any hardware changes were done to the v2 for the hamvention release..Mine seems to have a lot of birdies in the receiver across all bands regardless of different antennas tried..did the swr bridge calibration and rf calibration..any ideas or suggestions?
Steve N3KDN Clearwater Florida DMRID # 3115569 All Messages By This Member #103070 开云体育 Have tried different power supplies and lipo batteries with same results?? reflashed firmware? have rf chocks on power line as well….will check ground points inside case is next step ? Sent from for Windows ? toggle quoted message Show quoted text From: Ashhar Farhan Sent: Saturday, June 17, 2023 9:15 AM To: [email protected] Subject: Re: [BITX20] v2 hardware changes from model shipped on 4-17-23 and birdies on receive ? The sbitx does have spurs but they are all well below the band noise (when the antenna is connected). If you have spurs, you might want to check with a different power supply. There are no hardware changes at all to any sbitx v2. - f ? On Sat, Jun 17, 2023, 6:25 PM <stevegrass8@gmailcom> wrote: hello I got a v2 model from a ham that was bought on 4-17-23 built..I am curious if any hardware changes were done to the v2 for the hamvention release..Mine seems to have a lot of birdies in the receiver across all bands regardless of different antennas tried..did the swr bridge calibration and rf calibration..any ideas or suggestions? ? 71C5FB8B6DCD41B3B5DC4349EB1A8E40.png D890DFCE42234658B15C9A8CB721AAD0.png
Dave AB7E All Messages By This Member #103072 Well, there was the change to the location of the threaded inserts for the PA transistor heatsink, correct? 73, Dave? AB7E toggle quoted message Show quoted text On 6/17/2023 6:15 AM, Ashhar Farhan wrote: There are no hardware changes at all to any sbitx v2. - f
Dave New, N8SBE All Messages By This Member #103092 开云体育 Are you seeing this with a dummy load attached? I've noticed also that occasionally I get a bunch of garbage due to the IC2 bus not properly initiating.? A shutdown/reboot fixes that. If you are using an antenna, DON'T use a simple whip or wire attached directly to the sBitx.? It will do nothing except pickup local noise. 73, -- Dave, N8SBE toggle quoted message Show quoted text On 2023-06-17 08:55, stevegrass8@... wrote: hello I got a v2 model from a ham that was bought on 4-17-23 built..I am curious if any hardware changes were done to the v2 for the hamvention release..Mine seems to have a lot of birdies in the receiver across all bands regardless of different antennas tried..did the swr bridge calibration and rf calibration..any ideas or suggestions?
ajparent1/kb1gmx All Messages By This Member #103095 I had and still have on the DE version any frequency xxxx50.00khz (all bands) or so depending on sideband.? Never found a solution.? Between birds RX was fine. Still there after many mods including removing the switch mode 5V power for analog one. -- Allison ------------------ Please use the forum, offline and private will go to bit bucket.

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