Re: good news / Bad news
To the group: just to let you know that things are coming along.
What I thought was a lack of sensitivity was just an out-of-band experience
(out-of-body?)
After I replaced my caps with NP0 caps, it
By
Baruch Atta <baruchatta@...>
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#19143
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DDS/VFO -Analog Device options-
Hi Guys
I was checking the Analog Device website
http://www.analog.com/en/products/clock-and-timing/direct-digital-synthesis.html
By
co6bg@...
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#19142
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Re: Photo Permission
Thanks, Ashhar!
Jack, W8TEE
To: BITX20@...
Sent: Tuesday, December 20, 2016 11:06 AM
Subject: Re: [BITX20] Photo Permission
? you can use anything from the website. except for
By
Jack Purdum <econjack@...>
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#19141
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Re: Photo Permission
you can use anything from the website. except for the pcb layout, nothing
else is under any restrictive copyright.
- f
BITX20@...> wrote:
By
Ashhar Farhan
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#19140
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Photo Permission
All:
I'm giving a talk ("Giving Your QRP Rig a Facelift") at the Four Days In May conference that takes place on the eve of the Dayton hamfest. I would like to use some of the photos of the BITX40
By
econjack@...
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#19139
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Re: Bitx40 review (video)
Those who have used an Si5351 to supply both the VFO signal and the BFO signal; I am wondering where you would inject the DDS BFO signal into the BITX40 board. The existing BFO osc could be easily
By
Al Duncan VE3RRD
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#19137
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Re: Frequency counter and huff n puff using Pic
Thanks Rob,
I understood that you were emphasizing the code re-purposed for the Bitx40, but you included the link! I checked, liked what I saw, and was looking for the lazy way to an answer on buying
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Thomas Noel <tnoel@...>
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#19138
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Re: Frequency counter and huff n puff using Pic
Kits are due end of January.
Rob
By
Rob Lane
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#19136
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Re: Frequency counter and huff n puff using Pic
Hi Thomas,
I'm not aware of any kit problems. I'll contact them and find out.
I'm not involved in the kits, I merely posted about the code which could be used with the BitX40 successfully.
Rob
By
Rob Lane
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#19135
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Re: Bitx 40 board.
Thank you, Ken. Glad it helped.
You know, you can get USB and LSB through the same Cohn filter. Remember that the filter is a passband filter about 3 kHz wide with an upper and lower skirt. For
By
John Backo
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#19134
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Re: Note about using si5351
Thanks Rob for useful information
regards
sarma
vu3zmv
By
mvs_sarma@...
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#19133
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Re: Bitx 40 board.
John
You did an excellent job on explaining this subject. It's something I will
be investigating more. Once in a while something comes along that I don't
understand and I don't give up till I
By
Ken
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#19132
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Re: Frequency counter and huff n puff using Pic
Rob,
I note all the kits are “Out of Stock”. Are you aware of any plans for continued production?
Thomas W Noel
KF7RSF
By
Thomas Noel <tnoel@...>
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#19130
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Re: Bitx 40 board.
Thanks Bill for your link. Been too busy with work to play with the bitx,
but will be back on it the coming week.
I will have to go back to messages from yourself and John to try to wrap my
head
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Ken
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#19131
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Re: Bitx40 SI5351 drive strength
I checked the drive at the DDS input and found it to be 1vpp.
(from internal VCO)
I did this because I plan to add a DDS also and have a few. I have 2 of the N3ZI ver.1 DDS
and 2 homebrew Uno>9850.
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kt4wo67@...
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#19129
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Frequency counter and huff n puff using Pic
I happened to be working on an MKARS80 which is a variant on the BitX. I realised that this rig uses a Pic 16f818 as a frequency counter with LCD readout and it generates a huff n puff voltage.
If
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Rob Lane
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#19128
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Note about using si5351
Just a reminder to those using the si5351. Turn OFF unused outputs. They will default to a frequency and as in my case cause 'sproggies' across the bands.
You can check using a scope etc. to check
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Rob Lane
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#19127
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Re: bitx40 update
not at all. you will be able to upgrade that as well! just wait a few...
BITX20@...> wrote:
By
Ashhar Farhan
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#19126
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Re: bitx40 update
So does this mean the Bitx40 board that just arrived is now out of date? What has been updated, is there an update for existing boards or do I buy another Bitx40?
Bruce
VK2RT
By
bruce@...
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#19125
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bitx40 update
we have been working at an update to the bitx40. i was to give hfsigs the
final go yesterday but i have had to stall it due to a family emergency.
the new bitx40 will roll out very soon! until then we
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Ashhar Farhan
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#19124
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