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Date
Re: Slowing down Tx to Rx
Hi Evan, Thanks again I will give that a try . It's the delay in going back from Tx to Rx that I am after altering. It's just to stop the relay changing when using very slow CW. Reg,?????????
By R. Tyson · #79022 ·
Re: LIVE icon added to bitxmap.com
I have been on for the last hour and no one has shown up as "live".? Going off line now. 73 Evan AC9TU
By Evan Hand · #79021 ·
Re: Getting enough power to check SWR with BITx40
Try a "two-tone tester" ..more consistant results than the "ahhhhj" method Jim
By jim <ab7vf@...> · #79020 ·
Re: Test equipment recommendations
You'll encounter all sorts at hamfests, and find some really decent people there (as well as monsters).? My good scope (needed for my research) - the guy sold it to me for a price I could afford, but
By Robert D. Bowers · #79019 ·
Re: LIVE icon added to bitxmap.com
Checked again and no one is listed as live EXCEPT for the Icon that I changed. 73 Evan AC9TU
By Evan Hand · #79018 ·
Re: LIVE icon added to bitxmap.com
JohnR Here are the instructions from Doug W: /g/BITX20/message/78958 FYI: There are links at the bottom of the email that you receive: Groups.io Links:
By Evan Hand · #79017 ·
Re: Test equipment recommendations
I forgot all about this! One more (really inexpensive) thing to add to the list - a decent SDR dongle.? I spent less than $30 for mine - and I've used it rather like a spectrum analyzer (1mhz window
By Robert D. Bowers · #79016 ·
Re: Test equipment recommendations
I've thought about a decent SA, but have never had the money (or the luck to find one).? Thanks for the reminder about the RSP1A. I've been using my SDR dongle for checking spectra - it's limited to
By Robert D. Bowers · #79015 ·
Re: Test equipment recommendations
Go to a hamfest in your local area when they return ??. It may be hit-or-miss if you find an oscilloscope but if you ask around I'm sure someone will have one that they will sell for a reasonable
By Randy.AB9GO · #79014 ·
Re: Test equipment recommendations
Digital scopes have some limitations - and to really use them effectively, you do need to know a little about how they work and operate.? That being said, they can be valuable too - even a 5mhz
By Robert D. Bowers · #79013 ·
Re: Getting enough power to check SWR with BITx40
Scott, For years I've been using a free app for my iPhone called Tone Generator, it comes up outputting a 1000hz sine wave tone, I just put it by the mic and key up then make my tuner adjustments.
By Joel Caulkins/N6ALT · #79012 ·
Re: LIVE icon added to bitxmap.com
I am sorry I may have missed something or just can't figure it out. How do we go "live" on the map or change an icon or what do each icon mean. Is there a legend or instructions I am missing? I made
By JohnR · #79011 ·
Re: #calibration #v5 #calibration #v5
All of you are giving me more credit than is due.? If you would read as many of the posts here as I do, you would gain the same or more knowledge.? It is the advantage of being retired (lots of free
By Evan Hand · #79010 ·
Re: Getting enough power to check SWR with BITx40
Thanks to every one that replied to my question.? I now understand that for single side band the power should be very low (or zero) with no microphone input (which is consistent with my
By Scott · #79009 ·
Re: Getting enough power to check SWR with BITx40
Scott If I understand what you are saying, this may be a misunderstanding of how SSB works. Ideally there would be no, or minimal, power output without audio input from the mike. Audio input
By Arv Evans · #79008 ·
Re: Getting enough power to check SWR with BITx40
Scott You have not stated how you measured power across your dummy load. Was it a RF probe or oscilloscope or anything else Without knowing of this whatever calculations you are stating has no meaning
By Satish Chandorkar · #79007 ·
Re: #calibration #v5 #calibration #v5
Evan is one of the best and most helpful? uBITX diagnosticians in the known universe.. I too follow his posts. I read them like a master class. Don Km4udx
By Don - KM4UDX · #79006 ·
Re: Test equipment recommendations
For me, the basic is: 1 - DMM 2 - An SWR/Power meter 3 - A 100Mhz or better oscilloscope 4 - A PC Nice to have if you are going to do surgery, PA mods, or antenna experiments: 1 - An SDR Play RSP1A
By Evan Hand · #79005 ·
Re: Test equipment recommendations
Hi, The nanVNA is not going to serve you as a scope. Have you considered building some (or all) of your own test/measurement gear? In my early teens such things were beyond my reach so my first
By Bill Cromwell · #79004 ·
Re: Getting enough power to check SWR with BITx40
Just as a suggestion you might use something like fldigi in it's CW mode and send the Morse signal that way. You may have to include a VOX switch id the BitX doesn't have that. It can be included in
By Bill Cromwell · #79003 ·