[Flexradio] 160 Hz notch

2006-03-28 Thread Robert McGwier
The 160 Hz notch is about 12 dB deep. It is about 40-50 Hz wide. It is centered at 160 Hz. The following pictures were made using the SDR-1000 console. On the test tab I turned White Noise on and made it the input. I connected my transmitter to a dummy load ;-). I set the transmit

[Flexradio] 160 hz notch

2006-03-22 Thread Bill Nagle
I've been meaning and forgetting to ask who told you the eq notch should be at 160 hz? All of my broadcast engineer friends say it should be centered around 250 hz and be around -6-10 db deep. Perhaps we should start a thread on the forum and get other pinions? Bill Nagle [EMAIL PROTECTED]

Re: [Flexradio] 160 hz notch

2006-03-22 Thread Frank Brickle
Bill Nagle wrote: Perhaps we should start a thread on the forum and get other pinions? Presumably this issue is not a matter of opinion. Either there's a solid technical argument behind it or there isn't. As a general rule I'd suggest that (A) engineering errors get fixed in the official

Re: [Flexradio] 160 hz notch

2006-03-22 Thread John Basilotto W5GI
Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Jeff Anderson Sent: Wednesday, March 22, 2006 10:11 AM To: FlexRadio@flex-radio.biz Subject: Re: [Flexradio] 160 hz notch I was wondering that, too (why 160 Hz?). I'd assumed it should have been either 180 Hz or 150 Hz

Re: [Flexradio] 160 hz notch

2006-03-22 Thread Jim Lux
At 12:21 PM 3/22/2006, John Basilotto W5GI wrote: I'm the one that recommended the 160 hz notch, and I am a broadcast/audio engineer. The short reason for selecting this frequency is that it tends to make the audio sound boomy which is not desirable for amateur work. It is especially troublesome

Re: [Flexradio] 160 hz notch

2006-03-22 Thread Jimmy Jones
160 hz notch helps to remove that BOXY Yeasu sound which this radio does have without eq. I'm running 7 pieces of rack gear through my firebox and it works like a champ. I don't need the notch at all. Having udx and friends help with the eq cant hurt anyone either. That guy has radar

Re: [Flexradio] 160 hz notch

2006-03-22 Thread Bill Guyger
OK, I've got to quibble with Jim's quibble. The first paragraph below implies that one side of the line is grounded to the chassis. That was true back in the AC-DC 5 tube superhet days, (as opposed to the rock group) but is no longer legal because that would amount to having an exposed

Re: [Flexradio] 160 hz notch

2006-03-22 Thread Jim Lux
At 03:40 PM 3/22/2006, Bill Guyger wrote: OK, I've got to quibble with Jim's quibble. The first paragraph below implies that one side of the line is grounded to the chassis. There was a drawing on the page that clarifies that the chassis isn't connected to neutral. That was true back in