¿ªÔÆÌåÓý

Date
Re: boosting the power on 28 MHz #ubitx
First do Q90 with a UHF part then 911/912.? I'm not sure of the 2N5179 not for power but for voltage as its a 15V part if memory serves.? I use it for wideband low power amps but at 12V max. With
By ajparent1/kb1gmx · #51148 ·
Re: #ubitx-help #ubitx-help
OK. I will try to keep it simple. Lets take the example of Q10. It is not straight forward to calculate its operating point, because the bias voltage depends on the collector current, which is a
By Howard Fidel · #51147 ·
Re: #ubitx-help #ubitx-help
Thanks Howard for all your help. By shifting the connectors my first thought was that the transistors should not be affected, but who knows. Yes, I just have to go the hard way and measure as good as
By hakan.sjostrom@... · #51146 ·
Re: #ubitx-help #ubitx-help
Sorry you are having this problem. If you shifted the Raduino1 connector, and the transmitter is really working, I don't see how that can cause your problem since all the signals must be working for
By Howard Fidel · #51145 ·
Re: #ubitx-help #ubitx-help
Thanks Howard for the hint. But the result is just the same. I am afraid I destroyed some component (the raduino?)
By hakan.sjostrom@... · #51144 ·
Re: Nextion Display
Good question, But this can be a fruitful add-on to your existing display. But If there¡¯s interest , I/we could look at a direct plug in module to replace the existing board, Pin-Pin compatible. Too
By Charudatt Uplap · #51143 ·
Re: Nextion Display
Does this replace the original display? rOn
By W2CTX · #51142 ·
Re: Nextion Display
Nextion displays , by default are touch screen , Serial Displays regards charudatt-vu2upx Sent: Sunday, June 3, 2018 6:00 PM To: [email protected] Subject: Re: [BITX20] Nextion Display I just wondered,
By Charudatt Uplap · #51141 ·
Re: Nextion Display
Hello Allen, It has its own IDE and commands are pretty simple to use , since everything is serial. Learn by examples and YouTube Tutorial regards charudatt-vu2upx Sent: Sunday, June 3, 2018 9:09 PM
By Charudatt Uplap · #51140 ·
Re: Nextion Display
Peter, I did join the group, but all that¡¯s discussed is the use of this display in DMR use. Hope the interest spreads in other areas also. regards charudatt-vu2upx Sent: Sunday, June 3, 2018 11:08
By Charudatt Uplap · #51139 ·
Re: Nextion Display
Peter, this is a very interesting ?Facebook page. Thanks for posting it. kn4ud ? -- Allen ?Merrell
By Allen Merrell · #51138 ·
Re: #ubitx-help #ubitx-help
Since most of the circuits are bidirectional, and you can hear birdies, is still sounds like the antenna is not connecting to the receiver. Check relays K1 and K3 are not energized. Either one being
By Howard Fidel · #51137 ·
Re: No Idea
Al, many thanks for posting this. Wiring that up is the next step in my project and I was getting ready to look into this. You saved me the effort. I'm thinking of routing the hi level audio off the
By Mark M <junquemaile@...> · #51136 ·
Re: #ubitx-help #ubitx-help
No,?(a LW antenna). I have tested the transmitter (works), but the receiver doesn't work
By hakan.sjostrom@... · #51135 ·
Re: #ubitx-help #ubitx-help
Sounds like you forgot to connect the antenna?
By Howard Fidel · #51134 ·
#ubitx-help #ubitx-help
Hi, I just finished my uBITX build. I was extremely careful with the wiring and double checked everything. The weather is extreme warm for the season here in Sweden. That's probably (;-) why I got a
By hakan.sjostrom@... · #51133 ·
Re: how find wiring ssm2167 on ubitx
Take the purple wire off the mic jack.? Run a wire from the mic jack to input of the ssm2167 module.?? Tap into the Green 5v+ and Yellow Gnd for the key and solder them to the ssm2167 board.? Put
By Lee · #51132 ·
Re: RF power chain mods and improvements..
I just looked for spurs on the frequencies you mention, and all the spurs I see are nearly -60db from the carrier level. Is that a problem? Howard
By Howard Fidel · #51131 ·
Re: Nextion Display
What i really love with this sort of display: You could change the design and the whole UI without touching any code on the Arduino (or whatever board you are using). The Nextion Editor is not the
By Peter M?llers <peter.derwossi@...> · #51130 ·
how find wiring ssm2167 on ubitx
Hello Jacob, Thank you for your answer, I just have a little problem, I do not know the technique of the arduino well and I do not want to be silly, it's the same for the module ssm2167, if you can
By Joel Fournol · #51129 ·