[minima] Re: Stuck in Transmit
- From: <jerry@xxxxxxxxxxxxxxxx>
- To: minima@xxxxxxxxxxxxx
- Date: Fri, 28 Feb 2014 00:25:02 -0700
This has really got me stumped. I changed the Q23 resistor back to a
4.7k and added a 10k pullup resister
from pin 5 on the micro to ground. no luck. If I disconnect the R/T
line from the main board the LCD switches to RX. When the pin 5 R/T line
is Hooked to the main board it switches to TX. With the 47k resistor I
had .586 on the base of Q23, with the 4.7k I have .576 on the base. All
the functions of the FN button work good. It toggles the R.I.T, it
swaps the VFO, It resets the VFO. I have 5v on the Key pin and 5v on pin
5. The tuning works great. The digital board seems to be fine. I don't
know what to do next. Jerry
K5LRU
Harwood, Texas
> -------- Original Message --------
> Subject: [minima] Re: Stuck in Transmit
> From: Mark G0MGX <mark.g0mgx@xxxxxxxxx>
> Date: Thu, February 27, 2014 2:10 pm
> To: minima@xxxxxxxxxxxxx
>
>
> Did you implement the pull-up recommended by Farhan?
>
> I measure 0.7V on the base of Q23 when in RX, but mine is without the
> pull-up and with a 47K so probably not the best comparison!
>
> M
>
>
> On 27/02/2014 18:22, jerry@xxxxxxxxxxxxxxxx wrote:
> > I took Farhans advice and went over every trace on my digital board.
> > Cleaning between traces under a microscope and now I have 5v on pin 5 of
> > the digital board. My display reads: A= 14,2000 RX. And the second line
> > reads: USB RX 0t!. But I'm still stuck in transmit. I measured the
> > voltage on the 47k resister feeding the base of Q23, on the digital
> > board side it is 3v on the base side of Q23 it's .57 Should I change
> > that back to a 4.7k? What should the voltage be at that point? Jerry
> >
> > K5LRU
> > Harwood, Texas
> >
> >> -------- Original Message --------
> >> Subject: [minima] Re: Stuck in Transmit
> >> From: farhanbox@xxxxxxxxx
> >> Date: Wed, February 26, 2014 12:20 am
> >> To: minima@xxxxxxxxxxxxx
> >>
> >>
> >> Jerry, it is quite probable that 5 pin is shorting to the ground. Look
> >> very carefully.
> >>
> >> - f
> >>
> >> Sent from BlackBerry® on Airtel
> >>
> >>
> >>
> >> -----Original Message-----
> >>
> >> From: <jerry@xxxxxxxxxxxxxxxx>
> >>
> >> Sender: minima-bounce@xxxxxxxxxxxxx
> >>
> >> Date: Tue, 25 Feb 2014 23:17:50
> >>
> >> To: <minima@xxxxxxxxxxxxx>
> >>
> >> Reply-To: minima@xxxxxxxxxxxxx
> >>
> >> Subject: [minima] Re: Stuck in Transmit
> >>
> >>
> >>
> >> Is there supposed to be 5v on pin 5 of the digital board? I have 5v on
> >> pin 2 but nothing on pin 5. I tried the pullup resistor, didn't work.
> >> I changed the 4k7 to 47k on Q23, didn't work, still stuck in transmit.
> >> Jerry
> >>
> >> K5LRU
> >> Harwood, Texas
> >>
> >>> -------- Original Message --------
> >>> Subject: [minima] Re: Stuck in Transmit
> >>> From: Thomas Sarlandie <thomas@xxxxxxxxxxxxx>
> >>> Date: Mon, February 24, 2014 8:48 pm
> >>> To: "minima@xxxxxxxxxxxxx" <minima@xxxxxxxxxxxxx>
> >>>
> >>>
> >>> What happens if you remove the wire from the T/R pin?
> >>>
> >>> Are you sure the PTT button is not stuck pressed or something like that?
> >>>
> >>> There are two things that can switch the minima in transmit: the ptt
> >>> button
> >>> being pulled to ground (pin 5 of the arduino) or the cw key being pressed
> >>> (pin 24 of the arduino).
> >>> In normal rx configuration, both should be at +5V thanks to the internal
> >>> pull-ups resistors.
> >>>
> >>> thomas
> >>>
> >>>
> >>> On Mon, Feb 24, 2014 at 5:52 PM, <jerry@xxxxxxxxxxxxxxxx> wrote:
> >>>
> >>>> I finished my MB and hooked it to the controller. I connected the tune
> >>>> control to the control board and wired 12v to controller and 12v to the
> >>>> MB. I wired a switch to the Fn control pins, I wired the BFO pin on the
> >>>> MB to the BFO pin on the control board. I wired the T/R pin on the
> >>>> control board to the R/T pin on the MB. I wired pin 11 on the control
> >>>> board to the LPF pin on the MB. I left all the other pins on the control
> >>>> board empty. My LCD on power up reads: A 14,200 2
> >>>> USB TX 0
> >>>> I have power to the TX side of the MB. But pressing the FN does
> >>>> nothing. I can tune up and down freq., it changes from USB to LSB at
> >>>> the right times. but won't come out of tramsmit. Any ideas.
> >>>>
> >>>> K5LRU
> >>>> Harwood, Texas
> >>>>
> >>>>
> >>>>
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