67830Re: [softrock40] Re: Built Peaberry SDRs available
- Aug 20, 2012Hi John,
I/Q balance is strictly an application problem (for now).
All of the 40-30-20 radios I built ended up using the same TX settings
for I/Q balance on all bands. I don't just mean all the bands are the
same per radio, I mean all the radios were the same on all the bands!
Zero degrees of phase shift and half a dB of level adjustment puts me
better than -50dB. So there should be no reason to have software
remember per-band settings for transmit.
The RX is another story. There are variances with each radio and each
band. Some software, like SDR# and PowerSDR, takes care of this
automatically. Other software, like HDSDR, requires manual adjustment
when you change bands, or you can use the HDSDR "-p profilename"
option to save a profile for each band.
73 David AE9RB
On Mon, Aug 20, 2012 at 12:47 PM, John <greusel@...> wrote:
> What is the means of phase balance and is there some way for it to remember variations between bands?
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