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Waterfall width

Mike WA0YCN All Messages By This Member #110249 Has there been any change with v3 to support a wider waterfall width (e.g. 100 kHz or wider)? -- Mike WA0YCN
Jack, W8TEE #110250 Hi Mike: I'm not sure what the rig uses for its ADC/DAC, but those play a limiting role in the meaningful range of the spectrum and waterfall displays. I'm no EE guy, but the hardware puts severe limits on what software can do to present information on the display. Jack, W8TEE On Saturday, March 30, 2024 at 09:22:31 PM EDT, Mike WA0YCN <mgassman@...> wrote: Has there been any change with v3 to support a wider waterfall width (e.g. 100 kHz or wider)? -- Mike WA0YCN -- Jack, W8TEE
Gordon Gibby KX4Z All Messages By This Member #110251 开云体育 You can’t, because the crystal filter at 45 MHz and sampling rate using the inexpensive A/D will not allow a wider waterfall Gordon Kx4z? toggle quoted message Show quoted text On Mar 30, 2024, at 22:14, Jack, W8TEE via groups.io <jjpurdum@...> wrote: ? Hi Mike: I'm not sure what the rig uses for its ADC/DAC, but those play a limiting role in the meaningful range of the spectrum and waterfall displays. I'm no EE guy, but the hardware puts severe limits on what software can do to present information on the display. Jack, W8TEE On Saturday, March 30, 2024 at 09:22:31 PM EDT, Mike WA0YCN <mgassman@...> wrote: Has there been any change with v3 to support a wider waterfall width (e.g. 100 kHz or wider)? -- Mike WA0YCN -- Jack, W8TEE
Ashhar Farhan All Messages By This Member #110252 There is a 40 MHz crystal filter with 25 KHz bandpass that puts a physical limit on the span. - f toggle quoted message Show quoted text On Sun, Mar 31, 2024, 8:11 AM Gordon Gibby KX4Z <docvacuumtubes@...> wrote: You can’t, because the crystal filter at 45 MHz and sampling rate using the inexpensive A/D will not allow a wider waterfall Gordon Kx4z? On Mar 30, 2024, at 22:14, Jack, W8TEE via <jjpurdum=[email protected]> wrote: ? Hi Mike: I'm not sure what the rig uses for its ADC/DAC, but those play a limiting role in the meaningful range of the spectrum and waterfall displays. I'm no EE guy, but the hardware puts severe limits on what software can do to present information on the display. Jack, W8TEE On Saturday, March 30, 2024 at 09:22:31 PM EDT, Mike WA0YCN <mgassman@...> wrote: Has there been any change with v3 to support a wider waterfall width (e.g. 100 kHz or wider)? -- Mike WA0YCN -- Jack, W8TEE
Raj vu2zap Member Profile All Messages By This Member #110254 开云体育 Farhan, How about is we use this one ? Raj On 31/03/2024 9:18 AM, Ashhar Farhan wrote: toggle quoted message Show quoted text There is a 40 MHz crystal filter with 25 KHz bandpass that puts a physical limit on the span. - f On Sun, Mar 31, 2024, 8:11 AM Gordon Gibby KX4Z <docvacuumtubes@...> wrote: You can’t, because the crystal filter at 45 MHz and sampling rate using the inexpensive A/D will not allow a wider waterfall Gordon Kx4z? On Mar 30, 2024, at 22:14, Jack, W8TEE via <jjpurdum=[email protected]> wrote: ? Hi Mike: I'm not sure what the rig uses for its ADC/DAC, but those play a limiting role in the meaningful range of the spectrum and waterfall displays. I'm no EE guy, but the hardware puts severe limits on what software can do to present information on the display. Jack, W8TEE On Saturday, March 30, 2024 at 09:22:31 PM EDT, Mike WA0YCN <mgassman@...> wrote: Has there been any change with v3 to support a wider waterfall width (e.g. 100 kHz or wider)? -- Mike WA0YCN -- Jack, W8TEE
Ashhar Farhan All Messages By This Member #110255 Raj, The rejection is o?ly 40dB. You need at least 70 db opposite sideband rejection. When you design larger bandwidth, the out of passband rejection decreases toggle quoted message Show quoted text On Sun, Mar 31, 2024, 10:16 AM Raj vu2zap <rajendrakumargg@...> wrote: Farhan, How about is we use this one ? Raj On 31/03/2024 9:18 AM, Ashhar Farhan wrote: There is a 40 MHz crystal filter with 25 KHz bandpass that puts a physical limit on the span. - f On Sun, Mar 31, 2024, 8:11 AM Gordon Gibby KX4Z <docvacuumtubes@...> wrote: You can’t, because the crystal filter at 45 MHz and sampling rate using the inexpensive A/D will not allow a wider waterfall Gordon Kx4z? On Mar 30, 2024, at 22:14, Jack, W8TEE via <jjpurdum=[email protected]> wrote: ? Hi Mike: I'm not sure what the rig uses for its ADC/DAC, but those play a limiting role in the meaningful range of the spectrum and waterfall displays. I'm no EE guy, but the hardware puts severe limits on what software can do to present information on the display. Jack, W8TEE On Saturday, March 30, 2024 at 09:22:31 PM EDT, Mike WA0YCN <mgassman@...> wrote: Has there been any change with v3 to support a wider waterfall width (e.g. 100 kHz or wider)? -- Mike WA0YCN -- Jack, W8TEE
Gordon Gibby KX4Z All Messages By This Member #110262 Ashhar, thanks for the gentle correction on the IF frequency. Gordon KX4Z toggle quoted message Show quoted text On Sun, Mar 31, 2024 at 1:30?AM Ashhar Farhan <farhanbox@...> wrote: Raj, The rejection is o?ly 40dB. You need at least 70 db opposite sideband rejection. When you design larger bandwidth, the out of passband rejection decreases On Sun, Mar 31, 2024, 10:16 AM Raj vu2zap <rajendrakumargg@...> wrote: Farhan, How about is we use this one ? Raj On 31/03/2024 9:18 AM, Ashhar Farhan wrote: There is a 40 MHz crystal filter with 25 KHz bandpass that puts a physical limit on the span. - f On Sun, Mar 31, 2024, 8:11 AM Gordon Gibby KX4Z <docvacuumtubes@...> wrote: You can’t, because the crystal filter at 45 MHz and sampling rate using the inexpensive A/D will not allow a wider waterfall Gordon Kx4z? On Mar 30, 2024, at 22:14, Jack, W8TEE via <jjpurdum=[email protected]> wrote: ? Hi Mike: I'm not sure what the rig uses for its ADC/DAC, but those play a limiting role in the meaningful range of the spectrum and waterfall displays. I'm no EE guy, but the hardware puts severe limits on what software can do to present information on the display. Jack, W8TEE On Saturday, March 30, 2024 at 09:22:31 PM EDT, Mike WA0YCN <mgassman@...> wrote: Has there been any change with v3 to support a wider waterfall width (e.g. 100 kHz or wider)? -- Mike WA0YCN -- Jack, W8TEE

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