On Tue, Oct 2, 2018 at 07:43 AM, John P wrote:
only way I can set the levels properly is with the controls on DxCommander (which again, I'm using between WSJT and the radio [Yaesu FT-891]).
Let me clarify that. The controls in DxCommander I mentioned?are user programmed sliders that send CAT commands to the radio. ? -- John - WA2FZW
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On Tue, Oct 2, 2018 at 06:50 AM, <slamer555@...> wrote:
Can you share your ubitx digimode interface cable schematic?
If my uBitX wasn't still in the box, I'd be glad to! I did build a simple audio + PTT interface for?my BitX-40. The documentation is in the files section here. What Tom said about setting the audio level is the right way to do it though. Just for the record, the USB audio interface I'm using doesn't seem to want to pay attention to the level settings in Windows-7. Seems the only way I can set the levels properly is with the controls on DxCommander (which again, I'm using between WSJT and the radio [Yaesu FT-891]). ? -- John - WA2FZW
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I set my audio level by using a watt meter to measure the output power of the uBITX. I increased the audio until the power did not increase and backed off the audio to lower the power output by about 20%.
?If you have a SDR you can look at the waterfall and increase the audio until the spurs start to increase, and then back off the audio.
Tom, wb6b
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Hello John,
Can you share your ubitx digimode interface cable schematic? I made one with poteciometers to set audio level, but I dont know how to set right audio level from PC sound card to ubitx mic.
Thanks.
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Hi,
I've made other settings. I chose - "None".??It seems to me that everything is fine :)
Thanks...
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Re: Low Pass filter inductor question.
#filters
Use SEPARATE relays at input and output of each filter and ground the unused filter. Use different relays at different ends of the LPF. If you use one relay and take the output side back near the input side your attenuation will degrade. Regards.
Thank you Howard and Allison.? I know this is just kindergarten stuff to you all,? but that switching really had my brain tied in knots for a while!
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So far 40 and 80 seems great. ?I haven¡¯t been on 20 with it installed yet. I will check tomorrow in the day.
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On Oct 2, 2018, at 2:45 AM, iz oos < and2oosiz2@...> wrote: Evidently it does a very good job removing overload due to some local MW broadcasters. Is the output power the same on all bands or do you experience some lower output power?
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Good morning
for one of my mistake, arduino died
What can I replace all the vfo with?
Do you have any suggestions?
?
Thanks Sergio
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This looks good. I don¡¯t have a part inventory worth anything but that will change. Thanks for sharing.?
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On Oct 2, 2018, at 2:31 AM, Dr. Flywheel < Dr.Flywheel@...> wrote: My BC Interference filter is now permanently installed in my V4 uBitx. The response "Knee" is set to about 2.3 MHz. Most of the Rx birdies are now gone and I am still able to hear WWVH transmissions on 2.5MHz, quite clearly. Considering that it only took a few junk-box parts and about 20 minutes to construct, it was a very worthwhile investment.
? ? ? ? ? ? ? ? ?2000pF? ? ? ? ? ? ? ? ?820pF? ? ? ? ? ? ? ? ? 820pF? ? ? ? ? ? ? ? 2000pF
? ?>-----||-----.-----||-----.-----||-----.-----||-----< ? ? ? ? ? ? ? ? |? ? ? ? ? ? |? ? ? ? ? ? | ? ? ? ? ? ? ? ? E 2.2uH? ? ? E 2.2uH? ? ? E 2.2uH ? ? ? ? ? ? ? ? E? ? ? ? ? ? E? ? ? ? ? ? E ? ? ? ? ? ? ? ? |? ? ? ? ? ? |? ? ? ? ? ? | ? ? ? ? ? ? ? ?GND? ? ? ? ? GND? ? ? ? ? GND ? ?? <image.png>
73's Ron? ? N7FTZ On Mon, Oct 1, 2018 at 10:18 PM Joe Puma < kd2nfc@...> wrote: This BCI filter seems to be doing a great job. I took mine out of the housing and took the sma connectors off the board to install it in the ubitx. ? ? 
? ? ? 
? Sent from for Windows 10 ? ? Opps...pressed the wrong key. Source listed below: ----- Forwarded Message ----- Sent: Sunday, September 23, 2018, 10:36:21 PM EDT Subject: Re: [BITX20] BCI Filter | | SoftwareControlledHamRadio GroupThis group is for anyone who is interested in using software in ham radio projects. |
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site. Just do a? search on "BCI filter". It cost me under a dollar to build but works very well. A "high power" version of the filter appeared in: ¡°A Cheap and Easy BCI Filter¡±, CQ Magazine, August, 2016. ? On Sunday, September 23, 2018, 6:37:43 PM EDT, Nick VK4PP <nickpullen@...> wrote: Hi.?
Peter VK3YE did a video using some normal inductors to make a BCI filter.
73 Nick VK4PP
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Evidently it does a very good job removing overload due to some local MW broadcasters. Is the output power the same on all bands or do you experience some lower output power?
Il 02/ott/2018 07:18, "Joe Puma" < kd2nfc@...> ha scritto: This BCI filter seems to be doing a great job. I took mine out of the housing and took the sma connectors off the board to install it in the ubitx. ? ? 
? ? ? 
? Sent from for Windows 10 ? ? Opps...pressed the wrong key. Source listed below: ----- Forwarded Message ----- Sent: Sunday, September 23, 2018, 10:36:21 PM EDT Subject: Re: [BITX20] BCI Filter | | SoftwareControlledHamRadio GroupThis group is for anyone who is interested in using software in ham radio projects. |
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site. Just do a? search on "BCI filter". It cost me under a dollar to build but works very well. A "high power" version of the filter appeared in: ¡°A Cheap and Easy BCI Filter¡±, CQ Magazine, August, 2016. ? On Sunday, September 23, 2018, 6:37:43 PM EDT, Nick VK4PP <nickpullen@...> wrote: Hi.?
Peter VK3YE did a video using some normal inductors to make a BCI filter.
73 Nick VK4PP
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My BC Interference filter is now permanently installed in my V4 uBitx. The response "Knee" is set to about 2.3 MHz. Most of the Rx birdies are now gone and I am still able to hear WWVH transmissions on 2.5MHz, quite clearly. Considering that it only took a few junk-box parts and about 20 minutes to construct, it was a very worthwhile investment.
? ? ? ? ? ? ? ? ?2000pF? ? ? ? ? ? ? ? ?820pF? ? ? ? ? ? ? ? ? 820pF? ? ? ? ? ? ? ? 2000pF
? ?>-----||-----.-----||-----.-----||-----.-----||-----< ? ? ? ? ? ? ? ? |? ? ? ? ? ? |? ? ? ? ? ? | ? ? ? ? ? ? ? ? E 2.2uH? ? ? E 2.2uH? ? ? E 2.2uH ? ? ? ? ? ? ? ? E? ? ? ? ? ? E? ? ? ? ? ? E ? ? ? ? ? ? ? ? |? ? ? ? ? ? |? ? ? ? ? ? | ? ? ? ? ? ? ? ?GND? ? ? ? ? GND? ? ? ? ? GND ? ??
73's Ron? ? N7FTZ
On Mon, Oct 1, 2018 at 10:18 PM Joe Puma < kd2nfc@...> wrote: This BCI filter seems to be doing a great job. I took mine out of the housing and took the sma connectors off the board to install it in the ubitx. ? ? ? ? ? ? Sent from for Windows 10 ? ? Opps...pressed the wrong key. Source listed below: ----- Forwarded Message ----- Sent: Sunday, September 23, 2018, 10:36:21 PM EDT Subject: Re: [BITX20] BCI Filter | | SoftwareControlledHamRadio GroupThis group is for anyone who is interested in using software in ham radio projects. |
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site. Just do a? search on "BCI filter". It cost me under a dollar to build but works very well. A "high power" version of the filter appeared in: ¡°A Cheap and Easy BCI Filter¡±, CQ Magazine, August, 2016. ? On Sunday, September 23, 2018, 6:37:43 PM EDT, Nick VK4PP <nickpullen@...> wrote: Hi.?
Peter VK3YE did a video using some normal inductors to make a BCI filter.
73 Nick VK4PP
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The repeating frequency change is odd. However, just in case it related, with the version of the CEC firmware I'm running (several versions old) the CAT control can only change the frequency in the same steps as you have set for the manual tuning step size.?
To get WSPR and FT8 to work I needed to change the manual dial frequency step size to 10Hz.
Tom, wb6b
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This BCI filter seems to be doing a great job. I took mine out of the housing and took the sma connectors off the board to install it in the ubitx. ? ? 
? ? ? 
? Sent from for Windows 10 ?
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From: Jack Purdum via Groups.IoSent: Sunday, September 23, 2018 10:38 PM To: [email protected]Subject: Fw: Re: [BITX20] BCI Filter ? Opps...pressed the wrong key. Source listed below: ----- Forwarded Message ----- From: Jack Purdum <jjpurdum@...> Sent: Sunday, September 23, 2018, 10:36:21 PM EDT Subject: Re: [BITX20] BCI Filter | | SoftwareControlledHamRadio groups.io GroupThis group is for anyone who is interested in using software in ham radio projects. |
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site. Just do a? search on "BCI filter". It cost me under a dollar to build but works very well. A "high power" version of the filter appeared in: ¡°A Cheap and Easy BCI Filter¡±, CQ Magazine, August, 2016. ? On Sunday, September 23, 2018, 6:37:43 PM EDT, Nick VK4PP <nickpullen@...> wrote: Hi.?
Peter VK3YE did a video using some normal inductors to make a BCI filter.
73 Nick VK4PP
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Made some progress.... ? I removed the 5V buck regulator, wired back up the 7805 for the Raduino and powered the AGC with that. Something is also wrong with my volume pot, sound cutting out when I wiggle it, ill just replace it. But the spurs that were evenly spaced are gone. I also changed the audio wire I was using to the volume. The AGC is not behaving the way it was before. I get a nice signal and when there¡¯s a loud signal coming in I see the whole waterfall getting attenuated from the strong signal, its looking good to me now. I guess I could fire out if I can move my tap before then AGC. ? Is the antenna connection I¡¯m using for the filter and AGC part of the 45mhz IF?? I¡¯m happy to use it like it is. ? ? Here is the AGC at work. The 5V buck regulator was really causing trouble, signal is much improved overall. ? 
? A wider shot of the band. I use the out of band radar on the right as a visual aide for signal strength and propagation, the time server at 3.33 mhz as well. ? 
? Closer shot ? 
? ? ? ? This is my commercial radio FT-840. For visual reference of the band compared to the ubitx. ? 
? ? ? Sent from for Windows 10 ?
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From: Joe PumaSent: Monday, October 1, 2018 7:12 PM To: [email protected]Subject: Re: [BITX20] ND6T AGC ? Yes I was thinking that as well. I¡¯ll see if I can move it. Gonna try to add a power ground as well since the only ground is coming from the pin connector.? Joe.
My personal concern is where you installed the AGC, it is right in the middle of the 45Mhz filter... I prefer to put the AGC over on the other side near the first LPF relay.
Could be noise from your power supply getting into the 45mhz If....
Maybe...
73 Nick
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Re: Low Pass filter inductor question.
#filters
You need to switch both ends, preferably grounding the unswitched filter.
--
Mike
AI4NS
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Re: Ubitx - using Amateurradiokits.in AGC
#ubitx
John,
Where did you upload the schematics and procedure?
I've been off trail for a few days.
Eddie
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Re: Low Pass filter inductor question.
#filters
Thank you Howard and Allison.? I know this is just kindergarten stuff to you all,? but that switching really had my brain tied in knots for a while!
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Re: PTT switching for amp
Maybe you may want to add a PTT (RF relay sequencer).
Il 26/set/2018 15:31, < m0clscarl@...> ha scritto: Hi, can someone tell me a simple way to add a ptt switching circuit for my amp please? Can I just use pins from the transmit relay??
Thanks.
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Re: Low Pass filter inductor question.
#filters
I think I've got it.? Does this look right? 
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