With socket for the Nano, or permanent soldered-in type? Ted 302.981.6479
On Fri, May 31, 2019 at 12:54, PeteWK8S via Groups.Io <pmeier@...> wrote: New and unused $32 Shipped
Paypal or Postal M.O.?
Pete WK8S?
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AGC on Sunil's Nextion case info
I am struggling to figure out how to interface the AGC board that came with Sunil's uBitx/Nextion case to a V4 uBitx board. I have the S meter all hooked up and calibrated per the instructions that came on the CD with the case, that is responding just like the instructions say, setting the upper and lower limits of the meter. The part I can't understand is where the first IF audio plugs into the AGC board and how the audio gets back to the audio output. Man am I confused. Has anyone got this working? Care to share how you did it?
Joel
N6ALT
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Re: Preliminary results -- W8TEE/AC8GY Mag Loop Testing
Right now, like most figures, those are the modeled values. We plan on doing our own field tests when we have the second version built.
Jack, W8TEE
On Friday, May 31, 2019, 3:14:07 PM EDT, Gordon Gibby <ggibby@...> wrote:
Hmmmm. ?I didn¡¯t see any math to explain the quoted efficiencies of 40 or 90%......??
On May 31, 2019, at 13:51, Jack Purdum via Groups.Io < jjpurdum@...> wrote:
Not true. Our loop is 40% efficient on 40M and 90% on 20M. See:
Jack, W8TEE
On Friday, May 31, 2019, 12:30:24 PM EDT, iz oos < and2oosiz2@...> wrote:
As far as I have understood, loops have poor efficiency (something like 10%, ie - 10db), although they might have rx advantages. Did you software modeled it first? What would the efficiency be?
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Re: Preliminary results -- W8TEE/AC8GY Mag Loop Testing
Hmmmm. ?I didn¡¯t see any math to explain the quoted efficiencies of 40 or 90%......??
On May 31, 2019, at 13:51, Jack Purdum via Groups.Io < jjpurdum@...> wrote:
toggle quoted message
Show quoted text
Not true. Our loop is 40% efficient on 40M and 90% on 20M. See:
Jack, W8TEE
On Friday, May 31, 2019, 12:30:24 PM EDT, iz oos < and2oosiz2@...> wrote:
As far as I have understood, loops have poor efficiency (something like 10%, ie - 10db), although they might have rx advantages. Did you software modeled it first? What would the efficiency be?
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Re: Preliminary results -- W8TEE/AC8GY Mag Loop Testing
Well the good old standby is using a field strength meter around the compass at various distances from the antenna for transmit.? I guess you can do the same thing with a point source on receive.? Forget the on the air ¡°Hows my antenna sound¡± approach¡ it¡¯s useless because it¡¯s inconsistent.? ? Again you can¡¯t do better than NEC4 modelling.? I always start with it.? ??With your background, you should be able to get an academic version for Al to use..? ?
? ? ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Jack Purdum via Groups.Io
Sent: Friday, May 31, 2019 12:56 PM
To: [email protected]
Subject: Re: [BITX20] Preliminary results -- W8TEE/AC8GY Mag Loop Testing? If you have an alternative model, we'd be interested in knowing about it. We are in the process of finding out which tests make sense and which are really little more than intellectual smoke. Truthfully, we may never know the difference. Yep¡ that¡¯s true¡ for ideal calculations. ? ? ? Not true. Our loop is 40% efficient on 40M and 90% on 20M. See: | Fw: [JackAl] W8TEE Mag Loop Testing |
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On Friday, May 31, 2019, 12:30:24 PM EDT, iz oos <and2oosiz2@...> wrote: As far as I have understood, loops have poor efficiency (something like 10%, ie - 10db), although they might have rx advantages. Did you software modeled it first? What would the efficiency be? ? Il 31/mag/2019 01:52, "Kees T" <windy10605@...> ha scritto: Jack,
How do we figure out which reflector to follow for info on the ML Testing since it's on several. Guess this is the largest "member count" reflector, but might not be the best one.
73 Kees K5BCQ
-- ¡_. _._
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Re: Ubitx (2.0) - Screen too bright - cannot see when seeing straight
Replace 1 resistor. 470 ohms is a good choice. Saves a bit of current, makes the display last longer, less heat. Here's the link to how and where: http://www.nd6t.com/bitx/Backlight dimming
I do this on all of my displays.
73,
Don
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Re: Nextion 5/Enhanced for KD8CEC 1.2?
Joe,
Pretty much have the SA screen. Figured out the artifact issue when the slider is used. Going to make the slider a little larger since we have the room. Some more tidying up and then back to the home screen.
Any other areas that you know needs more work? Otherwise I will go and test in parallel....
Mark
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Re: Preliminary results -- W8TEE/AC8GY Mag Loop Testing
If you have an alternative model, we'd be interested in knowing about it. We are in the process of finding out which tests make sense and which are really little more than intellectual smoke. Truthfully, we may never know the difference.
Jack, W8TEE
On Friday, May 31, 2019, 1:53:26 PM EDT, MadRadioModder <madradiomodder@...> wrote:
Yep¡ that¡¯s true¡ for ideal calculations. ? ?
From: [email protected] [mailto:[email protected]] On Behalf Of Jack Purdum via Groups.Io
Sent: Friday, May 31, 2019 12:51 PM
To: [email protected]
Subject: Re: [BITX20] Preliminary results -- W8TEE/AC8GY Mag Loop Testing ? Not true. Our loop is 40% efficient on 40M and 90% on 20M. See: | Fw: [JackAl] W8TEE Mag Loop Testing |
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On Friday, May 31, 2019, 12:30:24 PM EDT, iz oos <and2oosiz2@...> wrote: As far as I have understood, loops have poor efficiency (something like 10%, ie - 10db), although they might have rx advantages. Did you software modeled it first? What would the efficiency be? ? Il 31/mag/2019 01:52, "Kees T" <windy10605@...> ha scritto: Jack,
How do we figure out which reflector to follow for info on the ML Testing since it's on several. Guess this is the largest "member count" reflector, but might not be the best one.
73 Kees K5BCQ
--
¡_. _._
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Re: Preliminary results -- W8TEE/AC8GY Mag Loop Testing
Yep¡ that¡¯s true¡ for ideal calculations. ? ?
toggle quoted message
Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of Jack Purdum via Groups.Io
Sent: Friday, May 31, 2019 12:51 PM
To: [email protected]
Subject: Re: [BITX20] Preliminary results -- W8TEE/AC8GY Mag Loop Testing? Not true. Our loop is 40% efficient on 40M and 90% on 20M. See: | Fw: [JackAl] W8TEE Mag Loop Testing |
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On Friday, May 31, 2019, 12:30:24 PM EDT, iz oos <and2oosiz2@...> wrote: As far as I have understood, loops have poor efficiency (something like 10%, ie - 10db), although they might have rx advantages. Did you software modeled it first? What would the efficiency be? ? Il 31/mag/2019 01:52, "Kees T" <windy10605@...> ha scritto: Jack,
How do we figure out which reflector to follow for info on the ML Testing since it's on several. Guess this is the largest "member count" reflector, but might not be the best one.
73 Kees K5BCQ
-- ¡_. _._
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Re: Preliminary results -- W8TEE/AC8GY Mag Loop Testing
NEC4 will tell you all of that without building a thing¡ ? ?
toggle quoted message
Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of Jack Purdum via Groups.Io
Sent: Friday, May 31, 2019 12:45 PM
To: [email protected]
Subject: Re: [BITX20] Preliminary results -- W8TEE/AC8GY Mag Loop Testing? We are also trying to assess other factors, too, such as a counterpoise and its affect on performance. We may find that these "other factors" play no significant role in the antenna's performance. Still, learning that something doesn't matter is as helpful as learning what does matter. On Friday, May 31, 2019, 1:38:51 PM EDT, Arv Evans <arvid.evans@...> wrote: Loop efficiency is dependent on size versus frequency.? There are many articles on-line that discuss this. ? As far as I have understood, loops have poor efficiency (something like 10%, ie - 10db), although they might have rx advantages. Did you software modeled it first? What would the efficiency be? ? Il 31/mag/2019 01:52, "Kees T" <windy10605@...> ha scritto: Jack,
How do we figure out which reflector to follow for info on the ML Testing since it's on several. Guess this is the largest "member count" reflector, but might not be the best one.
73 Kees K5BCQ
-- ¡_. _._
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Re: Preliminary results -- W8TEE/AC8GY Mag Loop Testing
Not true. Our loop is 40% efficient on 40M and 90% on 20M. See:
| Fw: [JackAl] W8TEE Mag Loop Testing |
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Jack, W8TEE
On Friday, May 31, 2019, 12:30:24 PM EDT, iz oos <and2oosiz2@...> wrote:
As far as I have understood, loops have poor efficiency (something like 10%, ie - 10db), although they might have rx advantages. Did you software modeled it first? What would the efficiency be?
Il 31/mag/2019 01:52, "Kees T" < windy10605@...> ha scritto: Jack,
How do we figure out which reflector to follow for info on the ML Testing since it's on several. Guess this is the largest "member count" reflector, but might not be the best one.
73 Kees K5BCQ
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Re: Preliminary results -- W8TEE/AC8GY Mag Loop Testing
We are also trying to assess other factors, too, such as a counterpoise and its affect on performance. We may find that these "other factors" play no significant role in the antenna's performance. Still, learning that something doesn't matter is as helpful as learning what does matter.
Jack, W8TEE
On Friday, May 31, 2019, 1:38:51 PM EDT, Arv Evans <arvid.evans@...> wrote:
Loop efficiency is dependent on size versus frequency.? There are many articles
on-line that discuss this.
_._
As far as I have understood, loops have poor efficiency (something like 10%, ie - 10db), although they might have rx advantages. Did you software modeled it first? What would the efficiency be?
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Re: Preliminary results -- W8TEE/AC8GY Mag Loop Testing
Loop efficiency is dependent on size versus frequency.? There are many articles
on-line that discuss this.
_._
As far as I have understood, loops have poor efficiency (something like 10%, ie - 10db), although they might have rx advantages. Did you software modeled it first? What would the efficiency be?
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Re: Ubitx (2.0) - Screen too bright - cannot see when seeing straight
In addition to the contrast control (Pin-3 on the LCD) you can add a resistor in series
with power to the backlight diode.? Resistor value can be determined by trying different
values until it is right (start with 500 ohms to 1K ohms).?
While not implemented in the raduino, it should be possible to add a bit of code to
use the PWM output driving a transistor to control backlight current.? Two code sections
would be needed; one for the backlight PWM, and one for user input to control the
PWM ON/OFF ratio.?
_._
On Fri, May 31, 2019 at 9:07 AM Skip Davis via Groups.Io <skipnc9o= [email protected]> wrote: I believe it is on all Raduino boards supplied, I just had one on a BITX40 that was on the display side of the board. On May 31, 2019, at 10:52, Sajid Rahum via Groups.Io < zs735@...> wrote: Thank you Skip
I will definitely try this afternoon once i get home; i could not recall if the pot is there on the v2 model.
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New and unused $32 Shipped
Paypal or Postal M.O.?
Pete WK8S?
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Hi Graham
?NJM 2073?did the trick for me; the output is very good and very loud.
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I was able to use finally the NJM without issues; audio is really strong with the v2 model.
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Re: Ubitx (2.0) - Screen too bright - cannot see when seeing straight
Thank you Skip.
I will let you know this evening.? Much appreciated.?
Fingers crossed on the mic side;? ?I used the banggood box to put it in. Cutting etc took most of the hours; the rest was fairly straightforward.? Howard had sent one inductor to raise the output power which I will try once everything work on TX side.
Baofeng has the 2 port connector; i will cut the speaker one out and just use the mic socket.
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Re: Preliminary results -- W8TEE/AC8GY Mag Loop Testing
As far as I have understood, loops have poor efficiency (something like 10%, ie - 10db), although they might have rx advantages. Did you software modeled it first? What would the efficiency be?
Il 31/mag/2019 01:52, "Kees T" < windy10605@...> ha scritto: Jack,
How do we figure out which reflector to follow for info on the ML Testing since it's on several. Guess this is the largest "member count" reflector, but might not be the best one.
73 Kees K5BCQ
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New AGC install PDF for the V4 users
New install pdf for the v4 users who have ordered our AGC's updated with mod.
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David
?N8DAH
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Ted
Joel Caulkins/N6ALT
MadRadioModder
Don, ND6T
N8DAH