Re: How to calibrate a n Ensemble VHF
- Right, time to own up and if anybody sniggers I'll come round and
smack your legs:)
I made a silly assumption that it worked like a standard converter and I would have to tune the IF so I was tuning in the 16MHZ region.
Popped up to 50 MHz and low and behold there it is all behaving properly and
I've done a calibrate to get back the 1.5KHz that it was off by....
Really feel stupid :(
Anyhoo, on the plus side, I won't have to do mental gymnastics to find a frequency..
All solved from a mail I got from Bob who pointed out what I was doing
wrong and many thanks to him...
Ok, start sniggering :)
--- In firstname.lastname@example.org, "Philip" <pcteee@...> wrote:
> Hard to describe what's happening here but need a bit of help..
> I calibrate my Ensemble RX11 and RX/TX by zeroing in on a Russian
> signal on 9.996 MHZ and then running "calibrate" on CFGSR built into
> HDSR (press H key on keyboard).
> The tuning indicator changes to the set frequency and all is tweaked
> Wanted to calibrate my Ensemble VHF which is running very nicely on 6
> Tuning to a close by beacon on 50MHZ (GB3BUX) I run through the same
> procedure as above but pressing calibrate moves the tuning away from
> the signal and I'm confused as to what's going on...
> I'm guessing it's something to do with how the frequency conversions
> are done in the Ensemble VHF?
> Also,(using HDSDR ver2)if I tune to that beacon with it dragged into centre of waterfall and note the frequency then drag the beacon to either end, the frequency displayed for that signal is different....
> Very confusing...
> Any pointers to what I'm missing would be great..