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Date
Re: Amateurradiokits Chassis and Grounding
Hi, I have just completed a build using the case designed for the 3.5 inch nextion.I did carefully with a counter sinking bit take off the minimum of paint surrounding the antenna,and front jacks. I
By Ian Reeve <ian.radioworkshop@...> · #69680 ·
Re: Amateurradiokits Chassis and Grounding
Thanks to all for confirming.? Now to get out the dremel tool. 73 Jerry NY2KW
By jsternmd · #69679 ·
Re: Amateurradiokits Chassis and Grounding
Ravi, Joe - good info - I remember doing something to expose some metal on the nice case. remember this is a DIY project -- Sunil would be happy to have us expose some metal wherever we deem
By Curt · #69678 ·
Re: AGC Circuit for uBITX Featured in July 2019 QST Magazine
The advantage of the JackAL is that it is a true AGC, controlling the gain of the AF and RF stages of the radio¡­ and thus preventing overload and distortion of the RF stages before the audio gain
By MadRadioModder · #69677 ·
Re: Amateurradiokits Chassis and Grounding
I have done this. Using a dremel I grinded around the screw holes from inside for all the case parts and grinded the holes where jacks, pots, antenna ports connect. I did notice a before and after
By Joe Puma <kd2nfc@...> · #69676 ·
Re: Amateurradiokits Chassis and Grounding
Hi Jerry, Was just reading this: https://petetest2017.files.wordpress.com/2018/11/grounding-modification.pdf Hope this helps? Ravi/M0RVI -- I'm here to add more value to the world than I'm using up.
By Ravi Miranda · #69675 ·
Amateurradiokits Chassis and Grounding
Just got the beautiful, high quality UBitx case for 5: Nextion and assembling.? One thing I notice is that for the many panel mounted components (pots, Mic, Key, Power, etc) there is no ground to the
By jsternmd · #69674 ·
Re: AGC Circuit for uBITX Featured in July 2019 QST Magazine
The JackAl circuit has both audio and IF AGC, is Open Source, and designed for the ?BITX. The manuals can be downloaded from QRP Guys. Anyone who wants to build it is free to do so. See attached.
By Jack Purdum <jjpurdum@...> · #69673 ·
Re: AGC Circuit for uBITX Featured in July 2019 QST Magazine
I have only glanced at the circuit but it appears similar to the various ubitx agc circuits we have seen with some nice enhancements. In fact, the author, K1BQT (email: k1bqt at arrl dot net), built
By pat griffin · #69672 ·
Re: AGC Circuit for uBITX Featured in July 2019 QST Magazine
Cool maybe.? Remember this list is global -- many in India, Europe, Asia, South America, even Canada don't have access to QST (nor do I - my copy hasn't arrived yet) -- can you at least mention the
By Curt · #69671 ·
AGC Circuit for uBITX Featured in July 2019 QST Magazine
On page 45 of the July 2019 issue of QST magazine there is an article on an AGC Circuit for uBITX.? The circuit replaces the uBITX audio amp and adds the AGC functionality.
By Dennis Zabawa · #69670 ·
Re: Installing BCI and Kit-Projects AGC
Curt, I think I will take your advice and install the Kit-Projects AGC in the location it is supposed to go. Then I¡¯ll try the BCI after the AGC and see how it works. The local broadcast only
By Joel Trenalone · #69669 ·
Re: Installing BCI and Kit-Projects AGC
If the AM is domestic, the BCI filter I used works well. Here is the schematic: and the response plot: Insertion loss is small and I used axial inductors purchased from Tayda Electronics. I think the
By Jack Purdum <jjpurdum@...> · #69668 ·
Re: Installing BCI and Kit-Projects AGC
Curt we are on the same page! I actually have a rather loud SWL station near me at 7.300 that loves to blow out my front end. My comments were more on the unless it gets through into the audio output
By KE2GKB · #69667 ·
Re: Installing BCI and Kit-Projects AGC
Joel obviously test the filter to see how well it works before working hard to integrate it.? and take advantage of natural integration of the AGC board.? I am confident you would find a way
By Curt · #69666 ·
Re: Installing BCI and Kit-Projects AGC
I have ordered the qrpme kit here (haven¡¯t received it yet): http://qrpme.com/?p=product&id=BCI And by the way the AM interference is pretty strong, enough that I can¡¯t really use the radio until
By Joel Trenalone · #69665 ·
Re: Installing BCI and Kit-Projects AGC
Which BCI are you using? I can take a look my self! I sadly know the layout acceptable well for now :) -- Tim Keller - KE2GKB https://shop.kit-projects.com
By KE2GKB · #69664 ·
Re: Installing BCI and Kit-Projects AGC
Thanks so much for all the information :) Now I understand how it works. I¡¯m inclined to install the BCI before the AGC, except that the Kit-Projects board is designed so nice as to fit like a
By Joel Trenalone · #69663 ·
Re: Mounting Low Pass Filter Relays On Bottom of Circuit Board
IF you place them on the bottom, it makes re-wiring them as per Alisons wiki entry, for better routing and that makes a difference.... 73 Nick VK4PP
By Nick VK4PP · #69662 ·
Re: uBITx v5 - with mods
Jerry/KE7ER Many thanks for your help. Will have a look and report back. Best 73, Ravi/M0RVI <jgaffke@...> wrote:
By Ravi Miranda · #69661 ·