¿ªÔÆÌåÓý

Date
Re: No Rx from my V4.3
AC9TU ..EVAN Hi Evan , Thank You so Much for your last reply . I got stuck into this XLoader debacle today . I downloaded an older version of it ( V 1.0 ) and put that onto an older Laptop I have here
By Patrick Peter Rosney · #83786 ·
Typo in ubitx_v6.1_code.ino?
Around line 177 in the ubitx_v6.1_code.ino, the address of the CW_KEY_TYPE parameter in EEPROM is set at 358. The previous parameters (VFO_A_MODE and VFO_B_MODE) are? at 256 and 257 respectively.
By Mark Erbaugh · #83785 ·
Re: #For Sale A Few QRP Goodies #for
Rubens, Simplesmente n?o tenho tempo para brincar com tudo como pensei que faria. Tamb¨¦m estou reduzindo um pouco o barraco e adoro construir coisas. 73 -- David N8DAH
By N8DAH · #83784 ·
Re: Interesting QST article
Link to group is: /g/ucx Dave, AA6RE wrote:
By Dave AA6RE · #83783 ·
Re: Question: Why do you call "AGC" a simple automatic antenna "attenuator" in this forum? #ubitx #ubitxv6
AAT (Automatic Attenuator Control)? _._
By Arv Evans · #83782 ·
WARNING: Promotional material
All: I just finished another pass through my Beginning C for Microcontrollers book. The narrative of the book is virtually the same as previous printings, but this one increases the font size from
By Jack, W8TEE <jjpurdum@...> · #83781 ·
Re: Interesting QST article
Simon Full circle. This all started with people modifying a QCX. It's great to see Hans supporting the hardware mod. Although, as he carefully notes, you will need firmware and support from the group.
By Bob Benedict, KD8CGH · #83780 ·
Re: Question: Why do you call "AGC" a simple automatic antenna "attenuator" in this forum? #ubitx #ubitxv6
Hi Curt and hi Gary ... to be honest I'm not even a little angry, on the contrary I'm stimulated to try to learn something more (as Bill rightly says, the more I study the more I realize that I still
By IW4AJR Loris <lorisbollina@...> · #83779 ·
Re: Question: Why do you call "AGC" a simple automatic antenna "attenuator" in this forum? #ubitx #ubitxv6
Ok agree its not an agc. But it addresses the problem of having your eardrums blown out with a sudden strong signal when you are wearing headphones. Plus it is easy to bypass. Just place a tiny reed
By Gary Rindfuss <rindfussg@...> · #83778 ·
Re: Question: Why do you call "AGC" a simple automatic antenna "attenuator" in this forum? #ubitx #ubitxv6
Loris Interesting viewpoint, as I agree it is unusual to place AGC attenuation at the very front. I had not seen any loss measurements, and I imagine they vary with frequency. Perhaps they are not as
By Curt · #83777 ·
Re: Question: Why do you call "AGC" a simple automatic antenna "attenuator" in this forum? #ubitx #ubitxv6
Hi Loris, There are a lot of newbies here and they just don't know. Don't be angry. Just help them alomng if they are actually open to help. I started learning about physics and electronics in the
By Bill Cromwell · #83776 ·
Re: #For Sale A Few QRP Goodies #for
Mestre David - N8DAH Meus parabens, ¨¦ um sonho!!! Por que voc¨º quer vender tudo isto? -- 73's PY2PVB Rubens Kamimura GG49in07 Em ter., 17 de nov. de 2020 ¨¤s 02:27, N8DAH <Dherron@...>
By Rubens Kamimura · #83775 ·
Re: Question: Why do you call "AGC" a simple automatic antenna "attenuator" in this forum? #ubitx #ubitxv6
Hi Bill ... I fully agree with you! What I am wondering is "why" this forum continues to call AGC a very vulgar "ATTENUATOR" even if more or less automatic. 73 Loris
By IW4AJR Loris <lorisbollina@...> · #83774 ·
Re: Question: Why do you call "AGC" a simple automatic antenna "attenuator" in this forum? #ubitx #ubitxv6
Hi, Attenuating the signal at the receive antenna input is not gain control at all. Attenuation can reduce overwhelming signals that distort the receiver front end and make those very weak signals
By Bill Cromwell · #83773 ·
Re: K5BCQ board layout and pinouts
It is not an AGC it is an antenna attenuator and good if you go to you will lose from 2 to 3 points S in reception, the system is not bypassable, even when turned off the MOSFET remains inserted in
By IW4AJR Loris <lorisbollina@...> · #83772 ·
Re: Interesting QST article
The new QCX mini in the pipeline from QRPLabs is proposed to come with some simple circuit modifications built in to make it easy to turn the QCX mini into a ucx (there are some user supplied parts
By Kelly Jack · #83771 ·
Re: Interesting QST article
The uSDX is a development effort that has several evolving designs, it's not a single product like the uBITX V6. One cool aspect of it is that it uses a highly efficient class E amp not only for CW,
By Bob Benedict, KD8CGH · #83770 ·
Question: Why do you call "AGC" a simple automatic antenna "attenuator" in this forum? #ubitx #ubitxv6
From my tests and from the measurements made, it appears to me that the best known "AGC" modification module is a very bad "ATTENUATOR" placed in series with the receiving antenna! Although I have
By IW4AJR Loris <lorisbollina@...> · #83769 ·
Re: K5BCQ board layout and pinouts
Arv, the speaker detached and bounced around. ?Finals were bent and the AGC board was ripped out of the three pin connector. ?Hot on the trail, I bent the transistors back straight, did some
By Frank KG9H · #83768 ·
Re: K5BCQ board layout and pinouts
Frank, KG9H What are the symptoms (what works and what does not work)? A picture of the damaged board might be interesting. Pinout for the off-board connections are in the assembly manual. Pinout for
By Arv Evans · #83767 ·