Re: #qmx #ssb CESSB update (Controlled Envelope SSB)
#qmx
#ssb
The parts list for the QMX+ states the microphone is a "6mm Electret", nothing more.
I suspect anything that claims to be an electret microphone would probably work.
?
These are similar to what comes with the QMX+
?
If you it will work better if you spend more money, there's this:
?
These corded mikes would probably work too:
?
Jerry, KE7ER
|
Re: #qmx #ssb CESSB update (Controlled Envelope SSB)
#qmx
#ssb
I built up the K6ARK microphone from Printables but with a different element - please see . Hans has one of these for testing - I'm curious to see how this compares to the built-in electret element.
|
Re: Smoked one QDX - how to not smoke another?
The toroids are pretty-much weather proof.? I use mine as you see it in the photo as a permanent part of my portable feedline.? Rain and a little moisture won't affect performance.? But just to verify, I tested one immersing it in water - and in that case, choking performance degrades by 10+dB - so you don't want to submerge the choke.? Just being wet didn't affect performance.? Winter snow/ice encrusted on it might be a problem.? So for a permanent installation, it is probably better to put it in a box, or at least cover it with some non-conductive shrink tubing.
?
|
On Tue, Oct 8, 2024 at 08:42 PM, p p wrote:
What model of device would the ssb FW mode apply too?
It applies to all the QMX and QMX+ models.
They all have SWR measurement capability.
?
73, Mike KK7ER
?
|
Kevin,
?
On Wed, Oct 9, 2024 at 06:53 AM, K O K3OX wrote:
All you needed was a good looking model looking longingly at it…
Well, the options were pretty limited.? There was ample evidence of mountain goats, but they are pretty shy.? Unfortunately, nobody else up there qualified as a "good looking model".
?
73, Mike KK7ER
?
|
Hi Paul,
?
On Wed, Oct 9, 2024 at 06:37 AM, Paul Ross wrote:
which band model? I have the 20 - 10 one on order.
It was the original Rev1 low bands model.? I carried a high bands model too, as a backup, since they are so small and light.
?
73, Mike KK7ER
?
?
?
|
Wei,
?
On Tue, Oct 8, 2024 at 09:16 PM, Wei AG6AQ wrote:
I worked you during lunch break today. Your signal is clean and loud in the SF bay area. So, it's a QMX 2 QMX.
Yes, you did!? Thank you for the contact!? I'm very glad to know it was QMX-to-QMX.
?
73, Mike KK7ER
?
|
Re: For Sale - QMX+ New in unopened box
I am interested.? I sent an email?to your gmail. Thanks,
Sam Hanie
623-219-8130
On Wed, Oct 9, 2024 at 9:41?AM Charles King via <stellavox1= [email protected]> wrote: Just got back from a vacation and found a QMX+ box on my doorstep (believe I ordered it in July).? But, I bought another rig on the trip so I don't need this one.?? SO it's for sale as received - includes the Factory assembled QMX+ in a cabinet with the optional development board and power connector/lead.? The factory checkout sheet is dated 10/1/24.
?
Price is $236 (which is what I have into it), plus shipping.? THANKS - K1ETU - stellavox46@...
|
Re: QCX Mini 10M LPF Toroids
Thanks all for the guidance on the toroid turns on the 17M QCX Mini modified for 10M.
?
I just completed the build, with resulting RF power out of 4.9 watts.?
?
Ron Taylor, I used your turns listed above, except, for no particular reason, I changed L2 from 13 turns to 12.? I also used Hans' technique of manipulating spacing of the wires on the toriod. In each case I compressed the wires at varying degrees and settled at 4.9 watts out. The meter even flirted with 5 watts a few times in the experimenting, but I decided to back off a tad to the 4.9W mark.
?
Again, thanks everyone -- 10 meters is awakening, and now I'm ready !
?
- Bill? W3WJ
?
|
The clouds are PERFECT! It looks like it could be an ad from a glossy high-end magazine. All you needed was a good looking model looking longingly at it…
?
73 Kevin K3OX
|
For Sale - QMX+ New in unopened box
Just got back from a vacation and found a QMX+ box on my doorstep (believe I ordered it in July).? But, I bought another rig on the trip so I don't need this one.?? SO it's for sale as received - includes the Factory assembled QMX+ in a cabinet with the optional development board and power connector/lead.? The factory checkout sheet is dated 10/1/24.
?
Price is $236 (which is what I have into it), plus shipping.? THANKS - K1ETU - stellavox46@...
|
which band model? I have the 20 - 10 one on order.
|
Re: Smoked one QDX - how to not smoke another?
Sorry, typo in previous response. It should of course say #61 choke material and not 62.??
For further information about this subject, I recommend these excellent sites
|
Hello,
?
you will find a very positive five page review of the "QRP Labs QMX 5W QRP Transceiver" in the November issue of the QST. It covers the firmware version 15 and the usual measurements are included. So it is not only Hans, who tells how good the QMX is. The numbers support his arguments, but puts again some pressure concerning the SSB part on Hans.
?
To add some pressure ;-) : I was looking for the CW-Machine called "QRP Labs QMX 5W QRP Transceiver"... I know, I know ...?
?
Hajo
|
Re: Smoked one QDX - how to not smoke another?
Hi Stefan,
The reason I wrote earlier to use FT240 instead of clipon?ferrite is that the impedance?presented to the currents on the outside of the coax shield is ferrite dependent times N (number?of turns) squared. So having 6?+ 6 turns gives a theoretical 144 times higher impedance compared to a clipon?that has only one turn (assuming same?ferrite type).? You could of course compensate by using 150 clipons instead. Like someone else wrote, the ferrite type should match the expected frequency range.? -31 for low end (160-40m). -43 for middle and -62 for high bands.? For all-round you can use different chokes in series.
Regards Jonas
Thank you Donald! I'll see if I can find type 31 clip-ons from a Finnish or European dealer. My antenna is a Sirio Boomerang W -->
|
On 08/10/2024 17:59, Bojan Naglic wrote: On Tue, Oct 8, 2024 at 04:41 PM, Mike KK7ER wrote:
What would you all think of us all buying Hans a cup of coffee when he
releases SSB FW?
Hi, Mike,
it is an interesting idea. Just a word of caution to Hans, don't spend all that money (15 to 20k) for the coffee. There are some other possibilities too, hahaha. :-) Beer? :-) Nick M0HGU -- Improve Hygiene Ltd. Registered in England 6558814 M: 07949 494 801 This email has been signed by GnuPG/OpenPGP to ensure veracity. If you need my public key (F655 25DF 2943 80DC 68C6 67F5 497D 9815 0272 3A37) please ask. -- 73 Nick M0HGU
|
toggle quoted message
Show quoted text
Hi Hans,
on are some references to
... but it seems that it does not exist ...
Cheers,
Torsten
--
vy 73 de Torsten | DB2TE
/"\? ASCII Ribbon Campaign
\ /? Against HTML Mail
? X? ?
/ \
|
Re: Smoked one QDX - how to not smoke another?
Thank you Donald! I'll see if I can find type 31 clip-ons from a Finnish or European dealer. My antenna is a Sirio Boomerang W --> https://www.sirioantenne.it/en/products/hf/boomerang-a-boomerang-w
|
Re: Smoked one QDX - how to not smoke another?
Thank you Stan! #61 material hasn't appeared in the documents I read so far. I'll try to read up on that too!
Are those toroids weather proof or should they be in a case? I do have some 15m of RG-58 flying around and several connectors. Would it make sense to put the toroid in an enclosure with bulkhead connectors? That would make for the easiest installation.
|
Re: #qmx #ssb CESSB update (Controlled Envelope SSB)
#qmx
#ssb
Hans, I wonder if you might recommend a mic yet, so that we're ready to roll when that fw update is posted for the masses?!
Sorry I have not thunk that far ahead yet. The built-in mic is an elecret. No doubt a not particularly fine one. I would hope that most electret mics would work... we shall see?
|
Sam Hanie
Hajo Dezelski