Re: QDX No TX on Antenna
#qdx
Yes, definitely try chokes on the coax next.
73, Willie N1JBJ
By
William Smith
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#94557
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Re: QDX No TX on Antenna
#qdx
Hi Willie, hi Allan,
First of all, thank you to both of you for taking time to answer me. I appreciate your support.
How did I tested my antenna, they are the one I use in SOTA with my FT 818, but
By
L¨¦opold VALLAURI
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#94556
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Re: How do yiou know your ground is any good? OT
Around 1900, there were lots of ¡°Lightning Rod¡± salesmen traveling in the Midwest selling their pricey systems to home owners. Lots of lightning related house fires pushed many home owners to
By
james jones
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#94555
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Re: How do yiou know your ground is any good?
Allison's post led my to look up Rudy N6LF. His site has some very interesting reading. https://www.antennasbyn6lf.com/
--
Colin - K6JTH
http://tangokeys.com
By
Colin Kaminski
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#94554
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Re: #qdx Low RX levels, but not totally gone. Not sure where to look.
#qdx
I'm a pre-tinner also and see no reason to not do a DC continuity check before installing in a board.? Just seems like the sensible technique to me.? I pre-tin leads and braid on coax connectors as
By
wa8yan.radio
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#94553
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Re: ProgRock - no response
I am back here.
Thank you Ron Carr for your reply! You was right... it works now!
That was my third Si5351A Synthesizer Module assembled. I did not have a problem with the two others (actually I had
By
Piotr
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#94552
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Re: How do yiou know your ground is any good? OT
Hello--
Here in rural NH, many houses feature what's called "standing-seam steel"? roofs
because they're better at shedding ice and snow buildup than shingles
or (Heaven forefend) slate
By
Brad Thompson
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#94551
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Re: U4B balloon tracker available again
Stop tempting me with more projects I don't have time to play with!
Joshua
By
Joshua KJ7LVZ
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#94550
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Re: toroid parallel winding to increase inductor Q?
If they are separate inductors, yes, then inductors do act similarly to
parallel resistors.
But ! two or three or four parallel windings on a single toroid or coil
form act like a single larger
By
Dave VE3GSO
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#94549
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Re: #qdx
#qdx
Duane,
Maybe I missed when it was discussed, but if you have Wsjtx set to use a fixed Tx freq then the receive can be anywhere in the passband and will not likely be at the transmit frequency
By
Cliff
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#94548
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Re: toroid parallel winding to increase inductor Q?
Inductors in parallel divide like resistors in parallel.
By
Dan Swanson
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#94547
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Re: #qdx
#qdx
Exactly Geoff.? My concern was around the offset received not seeming to be what I'm trasmitting.? I've since added ferrite chokers around both the SDRPlay usb cable and the QDX usb cable.? The TX
By
Duane (AC1NV)
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#94546
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Re: Ultimate 3S - Si5351A issue?
Curious, have you tried another mode - maybe simple CW beacon?
-----
Rob KB8RCO
By
Rob Giuliano
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#94545
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Re: How do yiou know your ground is any good?
There are 3 purposes for grounding systems;?electrical safety, lightning protection, and RF management.? What is sufficient for one may be inadequate for another; fixing a receiver noise issue may
By
Donald S Brant Jr
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#94544
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Re: Entertaining shipment journey
Mike,
That is UNREAL !!
Apparently packages only move on the 11th of the month ?
Thanks for the laugh at your expense.
72,
JohnKK4ITX
Click Here for Zephyrhills Area Amateur Radio ClubMany of
By
KK4ITX John
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#94543
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Re: "Op.Hans" with a QDX now on 11m!
#qdx
Hello Matt
Yes. The only difference is the toroids and capacitors in the Low pass
Filters and Band Pass Filters. That and the set-up of the "Band
Configuration" screen. There are no SMD's to change.
By
Hans Summers
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#94542
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Re: #qdx Low RX levels, but not totally gone. Not sure where to look.
#qdx
Any of Hans kits with inductors I build I tend to tin the coil wires before I assemble them on the boards, this makes sure the enamel is gone and mostly eliminates this issue and you don¡¯t risk
By
Peter M0PWX
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#94541
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Re: "Op.Hans" with a QDX now on 11m!
#qdx
Hi Hans,
is it possible to use a low band kit changing the Toroids? for use on the high bands?
Probably I have to remove the SMD capacitors too.
Do you publish a manual for the high band version?
I
By
[email protected]
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#94540
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Re: #qdx Low RX levels, but not totally gone. Not sure where to look.
#qdx
No problem, partly my reading problem too.
It does sound like Rx isn't doing all it should. I would suggest reflowing the solder joints on L12, a full 10 seconds on each connection. I recently had
By
Cliff
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#94539
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Re: #qdx Low RX levels, but not totally gone. Not sure where to look.
#qdx
The dummy load is connected only while running the self-tests. Sorry to be unclear. It's connected to a 20m dipole when trying to actually receive signals - but I was noting that the noise level
By
Lance KJ5O
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#94538
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