Re: IRF510 insulation question
#v5
So I got the ceramic insulators.? The included bushing fits the screw just fine.? And the screw, without the bushing fits the wafer just fine. But put the bushing on the screw, and ain't nothing going in the ceramic hole... They are (relatively) thicker than thin silicon wafers/pads. Which would not be a problem if... The hole were not too small for the insulating bushing. Which would not be a problem if... The ceramic material were not so hard and brittle that I couldn't drill or sand/grind it bigger. Which wouldn't be a problem if... I didn't want the heat sink and screw electrically isolated from the IFR510 case.? Which wouldn't be a problem if... I could return them. Which as a practical matter I can't.? Does anyone want a few of these to play with?? hahah. 
|
Put another way, maybe:? I can't figure out how the audio signal makes the trip from the audio pre-amp to the LM386 final amp.
toggle quoted message
Show quoted text
On Tue, Jan 21, 2020 at 12:26 PM, AndyH wrote:
I'm trying to understand the flow of the signal through the audio amp and pop-fix FET (Q74 in at least the V6).? I *think* I get that in the amplifier stage around Q70 (V6) has a bypass cap to ground, as indicated by flag M1.? The 2N7000 Q74 (V6) appears to have both terminals 2 and 3 grounded (pin 3 via flag M2).? Is that correct?? Am I reading the schematic correctly that flags M1 through M4 are ground?? If so, it appears that grounds the CW tone input and VOL-H via the 1K resistor R70.??
Thanks!
Andy? KG5RKP
|
Re: : #V6 software issues help please
#v6
I can't speak to the rest from the vantage point of my modded V3, but it appears that item 1 has been and/or is being worked.? Ashhar reported it on Christmas day, 2019. /g/BITX20/message/74007
On Tue, Jan 21, 2020 at 02:33 PM, Neil k8it wrote:
?
Begin forwarded message:
From: Neil Sablatzky < k8it@...> Date: January 21, 2020 at 3:26:58 PM EST To: farhanbox@...Subject: #V6 software issues help please
Asher
With help from an experienced uBitX builder we just finished putting together a V6 complete kit. I am very disappointed.
I would appreciate your help to resolve these issues ASAP.
1. No 17M band
2. Lag time on CW it is almost impossible to operate CW with either a straight key or a iambic panel since it takes about 1.5 seconds to respond.
3. No side tone volume adjustment can this be added in software? Or what is the best way to add this?
4. Mounting of display standoffs shorted to metal case. We fixed this by ordering nylon standoffs. The dimensions of the case seems off.
5. Unknown calibration numbers for 10MHz, set frequently , set BFO values. Please add a function to read back the calibration values so they can be recorded.
6. why does the LSB button stay ?lit when Cw button is pushed?
7. You had indicated that you would add Morse code feedback for selections and frequency . I am completely blind and had the help of two others in building this radio. When will this update be available? It was stated on the blind hams net that you would have this ready this month.
Thanks
73 Neil k8it
|
: #V6 software issues help please
#v6
toggle quoted message
Show quoted text
From: Neil Sablatzky < k8it@...> Date: January 21, 2020 at 3:26:58 PM EST To: farhanbox@...Subject: #V6 software issues help please
Asher
With help from an experienced uBitX builder we just finished putting together a V6 complete kit. I am very disappointed.
I would appreciate your help to resolve these issues ASAP.
1. No 17M band
2. Lag time on CW it is almost impossible to operate CW with either a straight key or a iambic panel since it takes about 1.5 seconds to respond.
3. No side tone volume adjustment can this be added in software? Or what is the best way to add this?
4. Mounting of display standoffs shorted to metal case. We fixed this by ordering nylon standoffs. The dimensions of the case seems off.
5. Unknown calibration numbers for 10MHz, set frequently , set BFO values. Please add a function to read back the calibration values so they can be recorded.
6. why does the LSB button stay ?lit when Cw button is pushed?
7. You had indicated that you would add Morse code feedback for selections and frequency . I am completely blind and had the help of two others in building this radio. When will this update be available? It was stated on the blind hams net that you would have this ready this month.
Thanks
73 Neil k8it
|
Re: STM32F769-FT8-Transceiver
Charlie Hello again. I finally got back on this project and am a bit puzzled as to which board stack on the headers. I ordered the adafruit proto board and it can be stacked with the nano or with the F769 board. However I can’t seem to find a way to stack all three together – maybe its just me. I have your latest release with the proto board showing the jumpers soldered. But haven’t found anything that shows the boards stacked or the backside of the f769 display. So my question is – which boards stack together? 73 Art N2AJO From: [email protected] < [email protected]> On Behalf Of Charles Hill Sent: Monday, December 9, 2019 8:32 AM To: [email protected]Subject: [BITX20] STM32F769-FT8-Transceiver Well I finally gotten the <> STM32F769-FT8-Transceiver project to a state worth releasing. I have placed the files required for making the project on Github at this location: <> I hope you enjoy the project. Regards, Charley
|
Reed,
for fast tune I was referring to the fast tune mode when selecting VFO twice. The accelerated tuning feature is also ?very nice. At very slow speeds more precise tuning is possible, as you speed up dialling the tuning incremental jumps are Appropriate and intuative.
I’m having fun playing with the changes
73?
Mick VA3EPM?
|
I'm trying to understand the flow of the signal through the audio amp and pop-fix FET (Q74 in at least the V6).? I *think* I get that in the amplifier stage around Q70 (V6) has a bypass cap to ground, as indicated by flag M1.? The 2N7000 Q74 (V6) appears to have both terminals 2 and 3 grounded (pin 3 via flag M2).? Is that correct?? Am I reading the schematic correctly that flags M1 through M4 are ground?? If so, it appears that grounds the CW tone input and VOL-H via the 1K resistor R70.??
Thanks!
Andy? KG5RKP
|
Thanks Reed
I have ordered in a new pencil iron with variable heat control
and a number of varied selection of tips so won't be at this for a
bit I want to add the extra morse jack for a straight key as has
been suggested.
My whole thrust on this project was to be able to do straight
key cw primarily.
I haven't looked closely at it, but am hoping the Morse key
input option uses a different method to turn on the TX indicator
without causing a cw rf o/p? lag as it does when keyed from PTT in
CW mode.
I have a couple of audio clips att here if of any use to others
to check BW and linearity spectrum. They are set to levels of just
under 32 mv or about 70% of the max mic audio input level; 1.
300Hz, 2. 3000 Hz 3. 2-tone 700Hz/1900 Hz
I will respond wrt to freq step changes when I can squeeze in
some time to get it uploaded and tested.
cheers & 73
Andy_501
On 2020-01-21 3:50 a.m., Reed N wrote:
toggle quoted message
Show quoted text
My latest improvement effort is to make the knob dynamically
change its step size, so when you're tuning fast, it goes fast,
but when you're trying to get the exact right frequency, it will
let you. There's a lot of subjectivity in this, so it's more of an
art than a science (though there is some science to be had).
Joel (N6ALT) - I'd appreciate it if you could take it for a spin,
since you seem generally up for some adventure.
Mark/Smitty - I'd also appreciate your feedback, since it's
building off of your work with the interrupts.
Andy_501 - I've dropped the increments on the settings menus
(among others, the local oscillator cal), so you may be interested
in trying it out for that reason. I've attached a hex, since I
don't think you've had success compiling?
Reed
|
Re: UBITX6 arrived today - cracked display
toggle quoted message
Show quoted text
On Jan 21, 2020, at 4:05 AM, support@... wrote:
?Hi Paul, Please do send in a mail to support@...?along with an image of the broken part and we can send you a replacement part soon. We are sorry that it has reached you with the display cracked during shipping. We do carefully check the parts before shipping and we dont know how this happened. Thanks, Thomas
|
I USE A SPINNER KNOB ON MY VER 6 TRANSCEIVER AVAILABLE ON EBAY.
This is a NEW, Alcoknob
part # K-91182F Machined Aluminum,
Black Spinner Knob.
This knob is a designed
to fit on a standard 1/4" shaft,
control device (potentiometer, tuner,
etc.)?on a?Radio, Amplifier,
or?Testing Equipment.
This?knob?is New Old
Stock (N.O.S.) from a bulk case, with
no retail packaging.
Can be used as?upgraded
tuning knob for the Eton E1-XM, as
well as some other radio receivers.
Features:
- Machined Aluminum
Construction
- Black Anodized, 3
Flute Body Design
- Fits standard
1/4" shaft devices
- Set Screw
Attachment
- 1.25" Diameter x
1.25" Total Height
|
On 1/21/2020 9:53 AM, Reed N wrote:
toggle quoted message
Show quoted text
Hi Mick,
4) When you say "fast tune" do you mean the "fast tune"mode when
the VFO is selected twice, or the rapid acceleration you get when
spinning the knob quickly?
5) The font is slightly smaller (both in code, and in number of
pixels), but I tried to keep the original look fairly similar.
6) You're spot on about the flickering. At some point I hope to
address that to the extent possible.
Reed
|
Hi Mick,
4) When you say "fast tune" do you mean the "fast tune"mode when the VFO is selected twice, or the rapid acceleration you get when spinning the knob quickly?
5) The font is slightly smaller (both in code, and in number of pixels), but I tried to keep the original look fairly similar.
6) You're spot on about the flickering. At some point I hope to address that to the extent possible.
Reed
|
I didn't actually make it run time configurable. Only compile time. Perhaps I should add a configurable setting for it... Definitely something I'll consider.
Reed
|
Your health definitely takes priority over radio shenanigans. I wish you a speedy recovery!
Reed
|
Reed,
I loaded the hex file (thanks for providing it). Some comments
1) Very Nice!!
2) I like the setup routine, freq adjust resolution, and BFO save not exiting the program makes tuning much easier.
3) screen refresh is immediate
4) the tune momentum is a great improvement and the fast tune is excellent
5) it took me a minute to adjust to the change in screen resolution, once I got used to it it is a cleaner display
6) my only (slightly) negative comment was the visible screen refresh when tuning or fast tuning. I assume this is a side effect of the the fast screen refresh.
all in all very nice upgrade Thanks
73
Mick VA3EPM?
|
Hi Reed,
I have it uploaded and will be testing today. So far it seems to be working great, not to much acceleration but enough to get you across the band. I will report any anomalys.
Joel
N6ALT
|
Reed:
At one time I had written a short article for Doug Henrick's QRPp magazine for what I called "Fast Tune" that worked in the same manner using a timing interrupt. You're right, the rate is very subjective and I used a symbolic constant the user could set for their particular preferences. That said, I got a lot of people telling me they tried it, but couldn't get used to it, so they removed my code. The good thing you did, which I didn't, was to make it settable at runtime. That might make all the difference, especially if the rig is "shared" (e.g., multi-op at Field Day).
Jack, W8TEE
On Tuesday, January 21, 2020, 4:51:00 AM EST, Reed N <greenkid336600+groupsio@...> wrote:
My latest improvement effort is to make the knob dynamically change its step size, so when you're tuning fast, it goes fast, but when you're trying to get the exact right frequency, it will let you. There's a lot of subjectivity in this, so it's more of an art than a science (though there is some science to be had).
https://github.com/reedbn/ubitxv6/tree/knob-acceleration
Joel (N6ALT) - I'd appreciate it if you could take it for a spin, since you seem generally up for some adventure.
Mark/Smitty - I'd also appreciate your feedback, since it's building off of your work with the interrupts.
Andy_501 - I've dropped the increments on the settings menus (among others, the local oscillator cal), so you may be interested in trying it out for that reason. I've attached a hex, since I don't think you've had success compiling?
Reed
-- Jack, W8TEE
|
Re: #ubitx #v6 Internal Microphone wiring on provided hand mic
#v6
#ubitx
Mine has definitely been modified because it’s supposed to only connect the mic not the speaker. UBitX is a 3 pin mic connector, but the BaoFengs by default are 4 pin, adding a pin for the speaker.?
But I would expect the modifications to be made at the 3.5mm end, not inside the hand mic. If that was the intention, then they cut the wrong wire on mine.
-Mark
toggle quoted message
Show quoted text
On Jan 20, 2020, at 5:04 PM, joshuaclough via Groups.Io <joshuaclough@...> wrote:
?I'm also curious about the wiring...
Is the included mic a stock Baofeng mic or has it been modified for the ubitx?
|
Re: #ubitx #v6 Internal Microphone wiring on provided hand mic
#v6
#ubitx
Yep. The whole “testing testing, Kr6zy, haaaaaaallooooo” routine. Doesn’t even twitch the power meter.?
toggle quoted message
Show quoted text
On Jan 20, 2020, at 6:40 PM, AndyH <ahecker@...> wrote:
?On Mon, Jan 20, 2020 at 06:39 PM, Smitty, KR6ZY wrote:
Having said that, my uBitX doesn't want to put out power on SSB.? I key up, but my meter doesn't register any power.? If I key up CW, it registers power just fine.? But not on SSB.??
Mark, ? ?Are you talking into the mic when you press PTT on SSB?? The radio won't generate an output signal without sound going into the mic. ? ?Fingers crossed! ? ? Andy KG5RKP
|
I hope I’ll have an opportunity to look at this, but I’m headed into knee surgery soon and my priorities are shifting around a bit. :-/
-Mark
toggle quoted message
Show quoted text
On Jan 21, 2020, at 1:51 AM, Reed N <greenkid336600+groupsio@...> wrote:
?My latest improvement effort is to make the knob dynamically change its step size, so when you're tuning fast, it goes fast, but when you're trying to get the exact right frequency, it will let you. There's a lot of subjectivity in this, so it's more of an art than a science (though there is some science to be had). https://github.com/reedbn/ubitxv6/tree/knob-acceleration Joel (N6ALT) - I'd appreciate it if you could take it for a spin, since you seem generally up for some adventure. Mark/Smitty - I'd also appreciate your feedback, since it's building off of your work with the interrupts. Andy_501 - I've dropped the increments on the settings menus (among others, the local oscillator cal), so you may be interested in trying it out for that reason. I've attached a hex, since I don't think you've had success compiling? Reed
<ubitx_v6.3.1_code.ino.hex>
|
Re: Audio amp to AGC board
You should take it from the high side of the volume control, not the connector on the audio amp board. The signal on the audio amp is affected by the volume setting.?
|
Mick
Joel Caulkins/N6ALT
Smitty, N6MTS