It all depends on the RTC current. A nice graph of expected life vs current
(uA) for a number of CR cells is in
http://www.varta-microbattery.com/applications/mb_data/documents/sales_literature_varta/HANDBOOK_Primary_Lithium_Cells_en.pdf
I had my K3 for 3 yrs when I upgraded the synth cards and I
Here is details on spacecraft design and on the RF comms subsystem.
Interesting reading
http://www.boulder.swri.edu/pkb/ssr/ssr-fountain.pdf
The New Horizons Spacecraft - Johns Hopkins Applied Physics Laboratory
http://www.boulder.swri.edu/~tcase/NH%20RF%20Telecom%20Sys%20ID1369%20FINAL_Deboy.pd
Wayne
Something tells me I may be your signature edge case for this particular
situation. I would be happy to be an early tester.
Cheers
Rick AG6AY
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Waiting for Wayne to comment sounds like a stellar idea! So say we all?
Cheers
Rick AG6AY
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Joe
"A 2.8 KHz filter is not appropriate for for AM"
So true
" If you want to operate diversity in AM you will need one of the wider
filters. "
I don't and don't recall mentioning I did want to. I do recall stating I
found this behavior accidentally.
I really wasn't expecting such a debate
Guy
Please note my response before your posting. It is not that I want
diversity beyond 2.8 kHz, I just accidentally did and the current side
effect of shifting the RX B passband caught be by surprise as I don't recall
this experience prior to updating the Synth boards.
I get that diversity mean
Joe
It's not that I want to use diversity beyond the filters I had in the sub
rx, I just accidentally discovered this effect
I am looking over Wayne's early comment about how their might be an issue
handling 8-pole vs 5-pole shifts. Could not the technique used for that
situation be applied when
I sure hope not!
Actually that raises a good question.
Wayne, is this effect something you consider a bug? I can tell you having
the sub rx shift seemingly on it's own just because I was changing the
passband was interesting to experience.
Rick AG6AY
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Here is what I posted on the Yahoo group just now. I hope a little time
helped clarify my description
post starts now ...
I can better explain and reproduce the issue now. Thanks to Dale WA8SRA,
Don W3FPR , and Wayne N6KR for hints along the way
I have the following 8-pole filters
Main: 1
Dale
I think you may be on to something!
I just used diversity on 20M in IARU and it is obvious that
- RX A is on freq
- RX B is 1.5 kHz low
When I use BSET I see
- RX A XFIL = FL2 (6 kHz)
I hit BSET
- RX B XFIL = FL3 (2.8 kHz)
I then adjusted Hi from 3.0 kHz to 2.8 kHz.
Lo! The instant
Dale
Hmm. I very well could have set Hi = 3.0 and that would set up the scenario
you mentioned. Cool. That should not take long to try.
However, I don't recall an absolute requirement for filter parity between
main and sub rx as the firmware should select the largest available even
when desired
Everyone - much thanks for the input. I will try for a compiled response
since I had so many responses!
"what exactly are you zero beating?
The WWV carrier ... well ok I'm not exactly zero beating in the proper
sense. By tuning the K3 through the 10.000 MHz WWV AM station using SSB
mode with Lo
Hi all
I have a very odd thing happening in diversity mode after installing the new
VFO's. I have a K3 with dual receivers and new VFOs using a dipole and loop
antenna when in diversity. I also have a P3. I am on current 5.29 firmware
and have successfully gone through all required calibration
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