This is just a tweak of the older two antenna scheme. Basically it gets
rid of the bidirectional nature of the two antenna version.
http://www.homingin.com/newdopant.html
Signals that are heavily modulated such as trunking control channels
don't work well with such schemes. [That part of the e
I think even my old Icom 706 would work that way. It has the high
stability option installed. From what I remember from the service
manual, every mixer has its local oscillator frequency locked to the
master oscillator through either a PLL or DDS which makes passband
shifting via the IF frequenci
This is an interesting observation regarding the Icom radio that can be
run from one master reference. I would assume any radio which has a high
accuracy option has this feature. Looking at the block diagram of the
R-8500, this appears to be an option. For the R-7100, it looks like it
uses one
David,
On 12/31/2011 08:30 PM, David wrote:
I agree that they are an amazing value but what kind of operating
lifetime do the Rb tubes have? SRS has this to say:
Historically, the lifetime of rubidium frequency standards has been
dominated by rubidium depletion in the discharge lamp. To avoid
They seem to run a while especially if you reheat the bulb as discussed
several times in these threads. So for $38 I am taking the gamble. Have
5 older units and have recovered one of them by reheating the lamp. So far
the others are good and I do not run those 24 X 7. Instead should the main
g
I agree that they are an amazing value but what kind of operating
lifetime do the Rb tubes have? SRS has this to say:
>Historically, the lifetime of rubidium frequency standards has been
>dominated by rubidium depletion in the discharge lamp. To avoid excess
>flicker noise, manufacturers would lo
