Re: [softrock40] Re: 10.7 Mhz IF
My oops. Thanks Ted.
I'm doing the same thing here with an sr40 and a sp-600, making an SDB - 'software defined boatanchor'.
Thank you for the reply.
I do agree whith you in case of a SoftRock-40 kit. In this instance,
the oscillator signal is divided by 2 twice so the xtal should be
Unfortunately, I don't have a SoftRock-40 kit (and did not make that
clear in my post). So I have the intention to feed the 10.7Mhz IF
into the new SoftRock v5.0.
In this case, if I understand it correctly, I don't have to use a
42.8 Mhz xtal as sugested. A 10.7Mhz xtal should do it, just like a
14060Khz xtal will do it for the 20M band.
--- In email@example.com, "larryroohr" <larryr51@c...>
> Hi Fernando,
> You need a 4x10.7mhz = 42.8MHZ xtal for the oscillator, which will
> a 3rd overtone xtal.
> --- In firstname.lastname@example.org, "n2ted" <n2ted@y...> wrote:
> > Hi All,
> > While waiting for my new SoftRock v5.0 kit to arrive, I came up
> > the ideia of using a 10700 Khz crystal on the oscilator and feed
> > antenna input with an IF signal (10.7 Mhz) from an Icom PCR-1000
> > This receiver is of triple-conversion with one of the IF being
> > Mhz with 50Khz bandwidth.
> > Now, the only problem here is to match the input impedance of the
> > SoftRock BPF to the PCR-1000 IF buffer. The 10.7 Mhz crystal is
> > problem to get and I imagine it will work with the cap values
> > on the kit.
> > Am I missing anything here?
> > 73
> > Fernando, N2TED