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Si5351 calibration

 

Looking for a way to calibrate the si5361. I don't have a signal generator. Do have a freq counter. Read the discussion for calibrating as well as compiled the calibration sketch for the si5351 but am lost in regard on how to actual use the info in the ide monitor. Scan for a you tube example but drew a blank. The sketch I am using has an entry of 140. But the is the authors value. Help appreciated
Re: Ashhar Farhan CNN Intervew (08-May-05, 20:00 UTC)

 

Yeah; I forgot about that one. Thanks for reminding us.

john
AD5YE


---In BITX20@..., <jbammi@...> wrote :

Or this more recent interview on QSO today with Eric 4g1UG, link below


?


73 de kc1ccr
Re: Buy it now vfo

Gary Humphrey
 

Thanks all now ordered looking forward to it will keep you updated. Gary?

On 28 Dec 2016 21:12, "k6alf@... [BITX20]" <BITX20@...> wrote:
?

Hi,


I had ordered my bitx40 b4 the digital vfo.? I emailed them, they responded:


>Please pay USD 14 to Paypal id?hfsignals@...?for the digital board. The board will be shipped along >with the additional components in few days.


>HfSignals Team.
?S
Hope this answers your question.
TF
Re: Buy it now vfo

 

Hi,

I had ordered my bitx40 b4 the digital vfo. ?I emailed them, they responded:


>Please pay USD 14 to Paypal id?hfsignals@...?for the digital board. The board will be shipped along >with the additional components in few days.


>HfSignals Team.
?S
Hope this answers your question.
TF
Re: Damage to SMT version bitx40 from nearby transmitter

 

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No doubt, Jerry, I was just afraid that someone with less knowledge ( like me :) ) might order the 2n4148s without understanding the difference. 73 and thanks for advising.

Sent from my iPad

On Dec 28, 2016, at 3:10 PM, jgaffke@... [BITX20] <BITX20@...> wrote:

?


Yup, 1n4148's, or whatever it was that Raj was suggesting.
Would be very tough to find some 2n4148 diodes ;-)
?

---In BITX20@..., wrote :

Jerry - don't you mean 1n4148 diodes , not 2n4148? Please advise. 73 w4usf

Sent from my iPad

On Dec 28, 2016, at 1:11 AM, jgaffke@... [BITX20] <BITX20@...> wrote:

?


Raj's suggestion of two back-to-back 2n4148 diodes between K1 pin 12 and ground?puts them only in the receive signal path. ?That seems the ideal spot.?

K1 pin 14 is in the transmit signal path, a?relatively low level signal from the exciter into Q13.
Perhaps you were looking at K2 when you suggested pin 14?
K2 pin 14 is only in the receive path, but does not have the benefit of the impedance of that long trace from K2 to K1, which might keep the diodes from blowing.

Jerry, KE7ER


---In BITX20@..., wrote :
?Looking at the schematic, I would put the diodes between pin 14 and ground.
?This puts them in RX? only. ?
Re: DDS VFO

 

. I found a calibration adjustment for the vfo, Instead of 27 mhz reference frequency, I adjusted it to 27010.050 which seems to put it almost dead on. I haven't really checked the transmit yet, but in a receiver it seems like it might be okay. I'll check with my friend in town later today.?
Re: Damage to SMT version bitx40 from nearby transmitter

 


Yup, 1n4148's, or whatever it was that Raj was suggesting.
Would be very tough to find some 2n4148 diodes ;-)
?

---In BITX20@..., <wa9whd@...> wrote :

Jerry - don't you mean 1n4148 diodes , not 2n4148? Please advise. 73 w4usf

Sent from my iPad

On Dec 28, 2016, at 1:11 AM, jgaffke@... [BITX20] <BITX20@...> wrote:

?


Raj's suggestion of two back-to-back 2n4148 diodes between K1 pin 12 and ground?puts them only in the receive signal path. ?That seems the ideal spot.?

K1 pin 14 is in the transmit signal path, a?relatively low level signal from the exciter into Q13.
Perhaps you were looking at K2 when you suggested pin 14?
K2 pin 14 is only in the receive path, but does not have the benefit of the impedance of that long trace from K2 to K1, which might keep the diodes from blowing.

Jerry, KE7ER


---In BITX20@..., <wa2yne@...> wrote :
?Looking at the schematic, I would put the diodes between pin 14 and ground.
?This puts them in RX? only. ?
Re: Damage to SMT version bitx40 from nearby transmitter

 

开云体育

Jerry - don't you mean 1n4148 diodes , not 2n4148? Please advise. 73 w4usf

Sent from my iPad

On Dec 28, 2016, at 1:11 AM, jgaffke@... [BITX20] <BITX20@...> wrote:

?


Raj's suggestion of two back-to-back 2n4148 diodes between K1 pin 12 and ground?puts them only in the receive signal path. ?That seems the ideal spot.?

K1 pin 14 is in the transmit signal path, a?relatively low level signal from the exciter into Q13.
Perhaps you were looking at K2 when you suggested pin 14?
K2 pin 14 is only in the receive path, but does not have the benefit of the impedance of that long trace from K2 to K1, which might keep the diodes from blowing.

Jerry, KE7ER


---In BITX20@..., wrote :
?Looking at the schematic, I would put the diodes between pin 14 and ground.
?This puts them in RX? only. ?
Re: A more stable Bitx40 (fun with ceramic resonators)

 

The 4.92 MHz resonator with C94 & C95 not removed gives about 4.8 MHz. ?The problem is that there's little variation since the varactor's capacitance swing is masked by the 100pF. ?I give some ideas for overcoming this in the video. Or maybe use a big old variable capacitor with all gangs connected together.?

As for the crystal option, two crystals in parallel in a super VXO should give a lot more than 3 kHz swing in a properly optimised VXO with the right inductance. More like 10 or 15 kHz. ?Again ideas in the video. So the 4.75 MHz crystal could be a good option if you can't get the resonator. ?

73, Peter VK3YE
Re: DDS VFO

 

Okay I have the same issue with my Bitx40 and Qrp-labs Vfo combination. Currently I am running the vfo at 2khz below the desired frequency. Additionally when I transmit my ssb voice signal is clear about 1.6 khz below that. So I'm looking for some sort of adjustment for the BFO, and I see there is a spot for a variable cap that does not exist on the board. While I may have a problem with the VFO, (new software version chip on order) how do I correct the BFO issue? Do I need to add a trim cap to the bfo circuit??
BITX 40 - CW adapter

 

Hello, someone has done some testing with this cw adapter?

I found this on Sunil's web site.



73 de IK8YFW Giuseppe.
Re: Tracking shipment

 

Don, that's good to know. I'm sure with the new model that they're still getting organized. I feel better that my order probably hasn't gotten misplaced.?

Thanks,
Roy
WA0YMH

On Dec 28, 2016 9:03 AM, "AD7LL donfrasher@... [BITX20]" <BITX20@...> wrote:
?

I haven't received any notices or tracking info either. ? I made my payment on Dec 23rd.

73
Don Frasher ?AD7LL
Re: Ashhar Farhan CNN Intervew (08-May-05, 20:00 UTC)

 

Or this more recent interview on QSO today with Eric 4g1UG, link below


?


73 de kc1ccr
Re: Tracking shipment

AD7LL
 

I haven't received any notices or tracking info either. ? I made my payment on Dec 23rd.

73
Don Frasher ?AD7LL
Re: Tracking shipment

 

Yes I did, but I initiated the transaction and so it may have confused the situation.?

I'm still curious if anyone has gotten shipping confirmation after ordering the new model. It simply may be that they are not shipping the new model yet.

On Dec 28, 2016 8:35 AM, "'Ian Spencer (DJ0HF)' dj0hf@... [BITX20]" <BITX20@...> wrote:
?

Hi Roy,

did you send them the extra 14 dollars necessary for the new model as this may be what they are waiting for (original Bitx 45 dollars, upgraded version 59 dollars) ?

73
Ian
DJ0HF/G3ULO


Am 28.12.2016 um 14:48 schrieb Roy Appleton twelveoclockhigh@... [BITX20]:
?
Wayne, was it a notification through your PayPal??

I'm curious if anyone has gotten shipping notification after ordering one of the new digital models. I ordered mine on Dec 17 when they were on hold waiting to announce the new model and then was notified that I could order the radunco model update to go with my original order. But haven't heard anything since.

Roy
WA0YMH

On Dec 28, 2016 12:01 AM, "Wayne Leake wa2yne@... [BITX20]" <BITX20@...> wrote:
?
?I got an email with a tracking number the same day that I ordered mine.
?It only tracked to the Mumbai airport,, where it was put in a mail sack.
?No further tracking. It arrived here 13 days from when I ordered it.

?Wayne WA2YNE
Re: Tracking shipment

 

开云体育

Hi Roy,

did you send them the extra 14 dollars necessary for the new model as this may be what they are waiting for (original Bitx 45 dollars, upgraded version 59 dollars) ?

73
Ian
DJ0HF/G3ULO

Am 28.12.2016 um 14:48 schrieb Roy Appleton twelveoclockhigh@... [BITX20]:

?
Wayne, was it a notification through your PayPal??

I'm curious if anyone has gotten shipping notification after ordering one of the new digital models. I ordered mine on Dec 17 when they were on hold waiting to announce the new model and then was notified that I could order the radunco model update to go with my original order. But haven't heard anything since.

Roy
WA0YMH

On Dec 28, 2016 12:01 AM, "Wayne Leake wa2yne@... [BITX20]" <BITX20@...> wrote:
?
?I got an email with a tracking number the same day that I ordered mine.
?It only tracked to the Mumbai airport,, where it was put in a mail sack.
?No further tracking. It arrived here 13 days from when I ordered it.

?Wayne WA2YNE
Re: Tracking shipment

 

开云体育

I ordered mine Sunday and haven't received any notifications yet. Don't know if it's because of the weekend, or the Christmas holiday, or what...

Rich
KC8MWG



Sent via the Samsung Galaxy Express 3, an AT&T 4G LTE smartphone

-------- Original message --------
From: "Roy Appleton twelveoclockhigh@... [BITX20]" <BITX20@...>
Date: 12/28/16 8:48 AM (GMT-05:00)
To: BITX20@...
Subject: Re: [BITX20] Re: Tracking shipment

?

Wayne, was it a notification through your PayPal??

I'm curious if anyone has gotten shipping notification after ordering one of the new digital models. I ordered mine on Dec 17 when they were on hold waiting to announce the new model and then was notified that I could order the radunco model update to go with my original order. But haven't heard anything since.

Roy
WA0YMH

On Dec 28, 2016 12:01 AM, "Wayne Leake wa2yne@... [BITX20]" <BITX20@...> wrote:
?

?I got an email with a tracking number the same day that I ordered mine.
?It only tracked to the Mumbai airport,, where it was put in a mail sack.
?No further tracking. It arrived here 13 days from when I ordered it.

?Wayne WA2YNE
Re: Tracking shipment

 

Wayne, was it a notification through your PayPal??

I'm curious if anyone has gotten shipping notification after ordering one of the new digital models. I ordered mine on Dec 17 when they were on hold waiting to announce the new model and then was notified that I could order the radunco model update to go with my original order. But haven't heard anything since.

Roy
WA0YMH

On Dec 28, 2016 12:01 AM, "Wayne Leake wa2yne@... [BITX20]" <BITX20@...> wrote:
?

?I got an email with a tracking number the same day that I ordered mine.
?It only tracked to the Mumbai airport,, where it was put in a mail sack.
?No further tracking. It arrived here 13 days from when I ordered it.

?Wayne WA2YNE
Re: Ashhar Farhan CNN Intervew (08-May-05, 20:00 UTC)

Juan Carlos Berberena Glez
 

Thank you so much
I will begin my day very happy today
73's Jc
?
“If you have a penny and I have a penny and we exchange pennies, you still have one cent and I still have one cent.? But if you have an idea and I have an idea and we exchange ideas, you now have two ideas and I now have two ideas.”?

Mr. Juan Carlos Berberena Gonzalez, BSc.
WJ6C exCO6BG?







On Wednesday, December 28, 2016 5:59 AM, "Bill Meara n2cqr@... [BITX20]" wrote:


?
Farhan, please forgive me.? The fellow asked so nicely,
The video is here:?




On Wednesday, December 28, 2016 3:21 AM, "iam74@... [BITX20]" wrote:


?
This is probably not available, and even if it was, it would be under copyright.

Note that there is a soldersmoke interview with Farhan, available for listening or download if you wish:



john
AD5YE



---In BITX20@..., wrote :

Hi Colleagues
Please, can someone have available this interview?
-Ashhar Farhan was interviewed for a CNN report (08-May-05, 20:00 UTC) on the Amateur Radio contribution to the Asian Tsunami disaster relief effort

....

73's Jc
Re: Buy it now vfo

Gary Humphrey
 

OK Ian?
Thanks will give a try?

On 28 Dec 2016 10:51 a.m., "'Ian Spencer (DJ0HF)' dj0hf@... [BITX20]" <BITX20@...> wrote:
?

Hi,
I just sent my 14 dollars to hfsigs with paypal and then sent them an E-Mail and it all seems to have worked fine. Had an answering E-Mail and am just waiting for delivery.

73
Ian
DJ0HF/G3ULO


Am 28.12.2016 um 10:51 schrieb gary897d@... [BITX20]:
?

Hi is there a buy it now for the digital vfo


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