Date   
Re: Availability of Mag Loop and other stuff...

ajparent1/KB1GMX
 

ITs cleverly hidden...

T1 and R4 and 3/4ths of the bridge the antenna is the other leg.  The centertap of the
transformer will have zero RF(noise) if the antenna leg has the exact same resistance
and reactance as R4.  What most expect to be resistors are the two halves of the
trifilar wound (three identical windings) transformer.

If R4 is made variable you can measure the impedance in the other leg.  The Palomar
(and others) device adds a variable capacitance to allow measuring the reactance
as well.  When R,jX are equal to the other leg then you can directly read it from a
calibrated scale.

For interest or if you plan to make on two articles one for the Palomar and another
on building and using.

The noise bridge was the pre-MFJ-259B device that was available and
more accurate.


Allison

FW: RE: Private: Re: [BITX20] Hycas IF

Mike
 

Couldn't reply direct to you. I hope you can read this via bitx groups.

Sent from my Xperia™ by Sony smartphone



---- Original Message ----
Subject: RE: Private: Re: [BITX20] Hycas IF
Sent: 4 Jun 2019 20:50
From: Mike Hadley <mhadley157@...>
To: "n2vdy via groups.io" <n2vdy@...>
Cc:

Hi. I have three full kits left. Price for each kit is $35.00 plus $6.50 shipping to USA (standard service) or $13.00 tracked and signed for. Payment can be made by PayPal friends and family via my email address.

Mike G4JXX

Sent from my Xperia™ by Sony smartphone



---- n2vdy via groups.io wrote ----

Are there any of these kits left? If so, how much are you asking? 

Re: BITX 40 not tuning

Wayne Leake
 

 That can happen.
 I bought 2 of the ten turn potentiomers a bit ago.
 One turned out to be bad. No continuity of any sort between any of the connections. And by the time I found that, I had no way of knowing who I bought it from.
 From now on, I will  test them when they arrive so I know which is which, and can do something about them.
 It is always possible to get a bad part with the seller not knowing.
  I was testing some transistors I bought, to see which ones had best gain.
 Need to bend the legs slightly for most of them.
 I started to gently bend the last one a bit, and one leg "broke".
 Like it had been partly nipped.
 The seller has replaced it with no trouble. Very good Seller. Anyway, always a good idea to test parts before soldering them in place..
 Wayne WA2YNE

Audio - R63 mod v2.0

Sajid Rahum
 

I am going to mod the R63 resistor which is 100k in v2 board.

Any suggestion what is target value? 10k? or 25k? 

I will hook up a parallel resistor to get the new value.

FS: QRP Gear

 

Had a unexpected car repair and need to move a few things out of the shack.

I have the following all built by me.

Norcal 40A 10T-Pot, Solid 3w out tuned for 7.025-7.070ish at 690Hz with built in Touch keyer 4x100char memory with jackyack software. 100$ Shipped

Ultimate3S kit with GPS, 3x bs170 finals installed and filters for 15/20/30/40/80m bands factory reset. 100+ in parts asking 110$ Shipped wired stock for 5v.

Hilltopper20 with LCD mod installed with 3D printed mount. asking 115 $ shipped

HobbyPCB RS-HFIQ 5W SDR with IQ Keyer: comes with cables for audio and pc usb, sold new north of 350$ yours for 275$ Shipped.

Deluxe TennaDipper Custom enclosure 50$ Shipped


More pics for e-mail please contact direct/private gud on the zed Paypal preferred.
 
73
--
David

 N8DAH
Kit-Projects.com

Shop is open!

Re: FS: QRP Gear

Jamie Anderson
 

I am interested in the Ultimate3S.  I didn't see the items on your site so send me an e-mail at jamiea@... and I can send a postal money order and a shipping address.

Re: FS: QRP Gear

 

U3S and SDR are sold

NorCal40 is pending funds
--
David

 N8DAH
Kit-Projects.com

Shop is open!

Re: FS: QRP Gear

Jamie Anderson
 

Guess I missed the U3S...  Too slow to check the groups.

Re: FS: QRP Gear

 

Everything Has been sold

Thanks for the interest.

73
--
David

 N8DAH
Kit-Projects.com

Shop is open!

Re: Antuino

 

Hi Farhan,

When will the Antuiono be released through HFSigs.com?

Joel
N6ALT

Re: FS: QRP Gear

Terry Morris
 

Now get your car repaired! lol

Terry - KB8AMZ
Brimfield Twp, OH USA EN91hd
Linux User# 412308, Ubuntu User# 34905, PCARS#78, NAQCC#6668, QRP-ARCI#8855, SKCC#14195


On Wed, Jun 5, 2019 at 11:54 AM N8DAH <Dherron@...> wrote:

Everything Has been sold

Thanks for the interest.

73
--
David

 N8DAH
Kit-Projects.com

Shop is open!

Wanted

Martin KM6TCD
 

Our club is looking for a built, tested, and working transceiver.
 
Anyone got one they might sell?
 
km6tcd

Re: Wanted

Doug W
 

did you have a particular model in mind?  this list covers the entire BITX family.
--
www.bitxmap.com

Re: FS: QRP Gear

 

I did 600$ brake job....
--
David

 N8DAH
Kit-Projects.com

Shop is open!

Re: Wanted

Adrian Chadd
 

Yeah, hit me up. I'm local to you (east oakland) and can help you get
a HF transceiver.



-adrian

On Wed, 5 Jun 2019 at 10:38, Martin KM6TCD <peaceofandalus@...> wrote:

Our club is looking for a built, tested, and working transceiver.

Anyone got one they might sell?

km6tcd

KD8CEC: Changing the calibration data from within the Nextion GUI

Mark Hatch
 

Hi,

Is there some special startup code to get to the "pmem" setup page from within the KD8CEC UX on a Nextion?

From within the Nextion editor, I can see the page "pmem" and it seems to allow you to update Calibration, BFO, etc.  However, it *does* not look like the page is actually accessible (or at least I have not found it yet.)

Anybody sorted this out? I am thinking that this page may have been for debugging by ian or was deleted because he recommends using the uBitx Database manager to do the updates?

73
Mark
AJ6CU

Re: Nextion 5/Enhanced for KD8CEC 1.2?

Mark Hatch
 

Joe,

Do you have the photoshop version of picture 1? The white box in lower left corner (where the spectrum is displayed) appears to be wide by 5-10 pixels. The OCDC in me wants to make the box the same width as the spectrum.

If not, I can photoshop it. BTW: Getting close to another update. a couple more screens that need a light touch (mem<->vfo, Control Menu, frequency), and then a sweep to put the home button in a consistent place.

73
Mark

uBITX v3 Low Output

Hugh Debo
 

Hello all,
I have been reading this group for a while, but have just joined. Thanks for the add.
I've been a ham for only a couple of years, so this has been a lesson learned:

A couple of weeks ago I was experimenting on JS8 with a new antenna and produced enough 
common mode current to fry my Raspberry Pi and uBITX.  The RPI was replaced as were the finals
in the uBITX, but I had only about 1W output. I replaced the finals a second time, but the low output continues.

I downloaded the Diagnostic Guide and have measured all the TX Testpoints (Thanks Farhan!).
Using a battery at 12.3 VDC to power the uBITX, most Testpoints' measurements showed voltages slightly higher 
(+ 0.1-0.4 VDC) than the values listed in the Guide.

Others showed these differences:
Q911-3, Q912-3, Q92-3, Q93-3, & Q96-3 measured 11.9 VDC instead of 10.9 VDC.
Q94-2 & Q95-2 measured 12.3 VDC instead of 11.3 VDC.
Q94-1 measured 12.3 VDC instead of 3.1 VDC.
Q95-1 measured 3.2 VDC instead of 3.3 VDC.
U2-1 measured 5.0 VDC instead of 4.2 VDC.
U2-3 measured 12.2 VDC instead of 10.9 VDC.

I've examined the components leading up to Q94-1 and they all seem externally okay to me. My ohm meter says they are
connected from one to the next.

My only electronics education is from reading and small experiments (I was a registered nurse before retirement), so I don't really know what to do next.
Can you all please help me figure this out?
I welcome your suggestions!

Thx, 
Hugh WM5J

P.S. I've constructed a toroid choke balun!!
H

Re: uBITX v3 Low Output

iz oos
 

I would check the values of the resistors around Q94


Il 06/giu/2019 04:20, "Hugh Debo via Groups.Io" <hughdebo=rocketmail.com@groups.io> ha scritto:
Hello all,
I have been reading this group for a while, but have just joined. Thanks for the add.
I've been a ham for only a couple of years, so this has been a lesson learned:

A couple of weeks ago I was experimenting on JS8 with a new antenna and produced enough 
common mode current to fry my Raspberry Pi and uBITX.  The RPI was replaced as were the finals
in the uBITX, but I had only about 1W output. I replaced the finals a second time, but the low output continues.

I downloaded the Diagnostic Guide and have measured all the TX Testpoints (Thanks Farhan!).
Using a battery at 12.3 VDC to power the uBITX, most Testpoints' measurements showed voltages slightly higher 
(+ 0.1-0.4 VDC) than the values listed in the Guide.

Others showed these differences:
Q911-3, Q912-3, Q92-3, Q93-3, & Q96-3 measured 11.9 VDC instead of 10.9 VDC.
Q94-2 & Q95-2 measured 12.3 VDC instead of 11.3 VDC.
Q94-1 measured 12.3 VDC instead of 3.1 VDC.
Q95-1 measured 3.2 VDC instead of 3.3 VDC.
U2-1 measured 5.0 VDC instead of 4.2 VDC.
U2-3 measured 12.2 VDC instead of 10.9 VDC.

I've examined the components leading up to Q94-1 and they all seem externally okay to me. My ohm meter says they are
connected from one to the next.

My only electronics education is from reading and small experiments (I was a registered nurse before retirement), so I don't really know what to do next.
Can you all please help me figure this out?
I welcome your suggestions!

Thx, 
Hugh WM5J

P.S. I've constructed a toroid choke balun!!
H

Re: Wanted

Balasubramanyan Cp
 

Dear CLUB MEMBERS/OM/YL,
Why not to get uBITX VERSION 5 LSB & CW MULTIBAND 10W QRP from OM Farhan, INDIA ?  It is very very very good IN ALL RESPECT !!!!!!
73s.  Email bsnvu2yc73s@....


On Wed, Jun 5, 2019 at 8:55 PM Adrian Chadd <adrian@...> wrote:
Yeah, hit me up. I'm local to you (east oakland) and can help you get
a HF transceiver.



-adrian

On Wed, 5 Jun 2019 at 10:38, Martin KM6TCD <peaceofandalus@...> wrote:
>
> Our club is looking for a built, tested, and working transceiver.
>
> Anyone got one they might sell?
>
> km6tcd
>