Re: Designing Maritime Radio
#bitx40
Hi Qonita,
You're quite welcome, and Jerry covered your question very nicely in his
reply. ?
SSB is preferable for voice communications anyway: it's more efficient than
AM (amplitude modulation)
By
Chris Brewer
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#43101
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Re: U1 fried
It appears at least a few folks have fried U1 by inserting a mono plug in the speaker jack and shorting out the audio. I¡¯d recommend only wiring up the tip connection and not the ring and then
By
K5ESS
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#43100
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Re: ubitx standoffs
#parts
They are metric 3 mm. So you have to use 3mm bolts those for the supplied spacers.
Most places have plastic spacers too.? Get 4-40 size ones.? Un-threaded 0.096" or 0.1" and you can use #4 sheet
By
Michael Hagen
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#43099
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Re: Speaker Jack
Are you talking about something like this?
Would the Yellow wire signal act kind of like a line out at a constant level?? Does it need a cap to isolate the line from the device plugged into that
By
Walter
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#43098
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Re: Speaker Jack
I would also like to have a headphone jack and an internal speaker. How do I wire this?
Bob
By
Bob Bennett
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#43097
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Re: Better Schematic
Outstanding.? I have them ordered thanks for the help
?
--
73, W9KJO
Walter
By
Walter
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#43096
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Re: BITX40 carrier and low output
Clark Martin
KK6ISP
The instructions at <http://www.hfsignals.com/index.php/ubitx-tuneup/> make no mention of PA DRIVE. In fact this is the first time I¡¯ve seen any indication of how to adjust PA
By
Clark Martin
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#43095
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Re: BITX40 carrier and low output
Hi Allard,
No, I had not tried that yet. I didn't connect this problem with a possible alignment issue. I will do that (hopefully this weekend and hopefully with help from my more technically-adept
By
w2vu@...
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#43094
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Re: ubitx standoffs
#parts
The threads are M3 ¡Á 0.5.? The standoffs I have are 11 mm long with a 6 mm male threaded part.? Lots of kits on ebay.
By
Arvo W0VRA
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#43093
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uB Shipped!!
Dec 27 orderedFeb 24 PayPal Shipping AlertFeb 27 DHL delivery.... signature required
Board number 084-3
LeeN8LJ
By
Lee Dziekan
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#43092
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Re: Designing Maritime Radio
#bitx40
There's a band-pass filter at L1, L2, L3, it is used during both transmit and receive.
You require a fairly broad passband,? but I suspect it will work fine across your 500khz.
As designed, it has
By
Jerry Gaffke
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#43091
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Re: uB Shipped!!
Will do! Stop by 3930 some afternoon. We rag chew from about 2pm till the net starts at 5. Looks like I'll be running the net on Tuesdays.
Vince.
--
Michigan VHF Corp.
By
Vince Vielhaber <vev@...>
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#43090
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ubitx standoffs
#parts
This Group is mighty nice.? I have enjoyed it tremendously for a while now and have learned from others here.? I have a question now.? I have installed my xbitx in an old junked Repeater Case, no
By
R S
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#43089
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Re: Another shipping Notification Update
Check paypal in case you just didn't get the notice.
Vince.
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Michigan VHF Corp. http://www.nobucks.net/ http://www.CDupe.com/
http://www.metalworkingfun.com
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Vince Vielhaber <vev@...>
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#43088
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Re: uB Shipped!!
What was your order date?
Lovely, DHL's tracking is down.
Vince.
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Michigan VHF Corp. http://www.nobucks.net/ http://www.CDupe.com/
By
Vince Vielhaber <vev@...>
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#43087
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Re: UBitx no audio! Could use some advise
Remove PA-PWR from the rig so the IRF510's won't be working, then try sending CW.
Does the sidetone come through the speaker?? If not, you have a very simple?
path from CW-TONE to the speaker to
By
Jerry Gaffke
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#43086
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Re: Results of MAX9814 in uBitx
#ubitx
John,
Good job!
tim ab0wr
"John" <passionfruit88@...> wrote:
By
Tim Gorman
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#43085
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Re: uB Shipped!!
I got payment confirmation on January 4 and still waiting for my second one to be shipped.
By
Michael Baker
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#43084
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Re: Designing Maritime Radio
#bitx40
Thank you for your reply..
There is no requirement for the modulation itself, I think SSB is good enough and suitable for my project. Did one RF-Front End circuit work for both transmit and receive
By
qonita.salimah@...
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#43083
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Re: ergonomic design of front panel
Michael,
I like your layout. I am considering putting the on/off switch on the
back as well in order to keep it close to the power connector.
I have a bit larger case than yours. I have a four pin
By
Tim Gorman
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#43082
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