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Updated Wiki Page: QMX External Microphone Options #wiki-notice

Group Notification
 

The wiki page QMX External Microphone Options has been updated by Chris <chris.rowland@...>.

Reason: Add reduced size images

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My Ffirst QMX SSB POTA #20m #amazing #antenna #qmx #ssb

 

Hi all,?
I finally got outside with the QMX to do a POTA activation. My objective with this setup is to have a HF kit as small and light as possible to keep in the glove box of my car for impromptu activations or in between kids sports games, practices etc.?
?
QMX is a recent kit built 20-80m version 12v and kit includes:
  • 12 ah lithium ion battery?
  • kit built Tufteln QRP EFRW 71¡¯ antenna
  • Retevis mic (Kenwood jack version modified for QMX)
  • thin paracord
  • Weaver 12 oz throw weight
  • 10m RG316 coax
  • Cheap earbuds
  • Toiletry bag from some airline?
Antenna was set up as a sloper with radiating end about 25¡¯ in a tree and feed end down to a picnic table and tied to a BBQ. SWR was 1.9. ?Conditions on 20m were good but lots of activity from POTA and the Mississippi QSO party.?

I got my 10 contacts hunting since it was easy pickings. Great contacts and signal reports from all directions and I¡¯m looking forward to many more outings with the QMX!
?
Re: Tariffs?

 

The hidden problem here is not the money. The Carrier
is asking a small business, to supply a tax id or identity information.
In the US that is SS#. Hans has a proficient assistant who may have to?
email each customer and ask for a SS#. This is a burden on a small business.?
I recall when the Red Cross demanded background checks on radio hams who were part of ARES,
many refused. But lets wait and see what DOGE and the US government do next!?
?
Re: Wiki Page: QMX External Microphone Options #wiki-notice

 

On Sat, Apr 5, 2025 at 09:20 AM, <rentwist@...> wrote:
Seems there is a permissions problem with the images you posted.? As such, the images are not displayed in your post.
?
I've fought the wiki edit system for hours and nothing seems to help.? The photos section won't accept images because it is full, maybe that's the problem.
?
?
Re: QMX+ no power output, low SMPS bias current

 

I did, but on another readthrough of the directions, I missed that it said to put it in from the underside of the board.? Let me try changing that.
Re: Wiki Page: QMX External Microphone Options #wiki-notice

 

I ordered a cheaper version that should be arriving today... Looks identical on the outside....
Gary
W9TD
About calibration

 

I have a QMX built by QRP Labs.
?
I haven't updated to the SSB firmware yet.
?
Do I need to calibrate?
?
How do I do the calibration process?
?
Thanks.
Re: Tariffs?

 

It is more likely Tariffs are applied when the carrier, has to supply paperwork
to the country. If the carrier has to prove or back up origin and cost, those costs
will be passed on because the process is handled by a third party broker.?
That is why Hans said, "Wait and see." This may take some weeks. I found
DHL credit card payment was not working properly because the verification had Captcha.?
I kept having to find bicycles, etc. I finally left cash for the driver.?
So there was a diminimus but you have to pay to prove it....if that makes sense HIHI.?
Re: QMX and power bank PD

 

5.5 x 2.1 is correct.?

73 Hans G0UPL


On Sun, Apr 6, 2025, 13:03 Muhsin TA1MHS via <muhsin.dogrular=[email protected]> wrote:
YES!?5.5 x 2.5mm?plug?works with me
QCX QDX QMX QMX+
even my 5volt working QRPp QDX
73 DE muhsin TA1MHS
Re: QMX and power bank PD

 

YES!?5.5 x 2.5mm?plug?works with me
QCX QDX QMX QMX+
even my 5volt working QRPp QDX
73 DE muhsin TA1MHS
Re: Tariffs?

 

Tariffs are assessed on import into the US, not when ordered from Turkye.? Whatever the % may be.??
Re: Tariffs?

 

In any case, I'm glad I ordered my QMX+ earlier this week.
Re: Available Hand Mics for QMX SSB ?

 

Hello Ivan, which microphone did you use? How is the quality of the mic? Thanks, Daniel?
Re: QMX and power bank PD

 

On Sun, Apr 6, 2025 at 03:09 AM, Muhsin TA1MHS wrote:
Buy the one with 5.5 x 2.5mm plug
NO!? You need the 5.5 x 2.1mm plug.? The 2.5mm version gives intermittent contact.
The long one, at least 12mm.
?
Chris, G5CTH
?
Re: QMX and power bank PD

 

Hi?
I found and using this
5/9/12 (15/20(for the PC) if the PD of the Power Bank Supports)
9 and 12 volts are great for the QDX, QMX and QMX+
Buy the one with 5.5 x 2.5mm plug


73 DE muhsin TA1MHS

?
Re: QCX+ TCXO

 

Hi
If you connect QCX to GPS,
you can (it will) precisely adjust frequency of the QCX for the TXCO
This was implemented for WSPR on QCX
If you leave the GPS on,
you'll have an atomic clock/frequency standart :)
73 DE muhsin TA1MHS
Re: QCX+ TCXO

 

On 06/04/2025 08:35, Bruce Akhurst via groups.io wrote:
The distinctive feature of the QRP labs device is old style analogue adjustment )as random digital steps don¡¯t play well with some digimodes
The data sheet you posted makes no mention ¡­
True Bruce,

I was going by the marking on the QRPLabs TCXO, "KXO-84 RG" which matches the Geyer part.

Unfortunately digital stepped adjustment TCXOs also do not state what they are.

73 Alan G4ZFQ
Re: QMX+ no power output, low SMPS bias current

 

Did you remember the loop between the bnc and the output from the swr bridge ?
Re: QCX+ TCXO

 

Alan. ?The distinctive feature of the QRP labs device is old style analogue adjustment )as random digital steps don¡¯t play well with some digimodes?
?
The data sheet you posted makes no mention ¡­?
Re: QMX real RTC #qmx

 

On Sat, Apr 5, 2025 at 09:59 PM, <whweb@...> wrote:
?
:-) WOlfgang OE3WHU
?
Wow, I'm impressed!
:)
?
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