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Boards and Kits
I'm back for a while and working on kits again. I put a very high priority on the new Display Driver board that fixes the T41 display freeze issue and allows a nice long cable to the display. I offer
By K9HZ · #33381 ·
Re: Updated book; not available on amazon uk
I don't know how long it takes for US changes to ripple through the system. I would write Amazon.UK and try to get an answer. Jack, W8TEE
By jjpurdum · #33380 ·
Updated book; not available on amazon uk
As per title
By Gareth Evans · #33379 ·
Re: 4SQRP T41 Assembled/Tested Radio for sale
It has beeen sold Frank
By Frank Jandreau · #33378 ·
Re: RA8875 display problems with T4.x - a visual study
What I'm looking for is the measuring procedure including the instruments you used to get the 100 dB and 78 dB numbers. I would like to run the same procedure on my radios to see what I get. -- 73
By Greg KF5N · #33377 ·
Re: RA8875 display problems with T4.x - a visual study
**** I'm guessing -100dBm. dB relative to 1 mW. - Jerry, KF6VB
By jerry-KF6VB · #33376 ·
Re: RA8875 display problems with T4.x - a visual study
Well there is no real absolute way its done as you probably know, you first need to determine the noise floor (for the mode) and that is usually the point at which the (S+N)/N = 3db (and of course,
By K9HZ · #33375 ·
Re: Update now available
That was changed...don't know why it wasn't updated. Jack, W8TEE
By jjpurdum · #33374 ·
Re: RA8875 display problems with T4.x - a visual study
Hi Bill, 100 dB relative to what?? How did you measure that? -- 73 Greg KF5N
By Greg KF5N · #33373 ·
Re: Update now available
¡°The latest (V12) PCBs are available for less than $5 each on the web site (/g/SoftwareControlledHamRadio). If you wish, pre-fabricated PCBs with all SMD devices already on the
By K9HZ · #33372 ·
Re: Update now available
I think this is the correct link: https://a.co/d/7OvoqhH
By Oliver KI3P · #33371 ·
Re: T41 T41EEE.9 Firmware Release
Ah¡­ old fashion Automatic Volume Control (AVC) dated from the old tube radios¡­to control the volume of the radio as to not blow out your ear drums¡­ as opposed to RF Gain (or Automatic Gain
By K9HZ · #33370 ·
Re: Where can I purchase V12 pc boards for the T41-EP SDT?
if you are in the UK i have a spare set
By Baz (G7SOJ) · #33369 ·
Re: More testing on PA
Yeah another mistake is pulling the wire so tight that is scrapes the enamel off the wire between turns and shorts them together. I am guilty of doing that¡­ Dr. William J. Schmidt - K9HZ J68HZ 8P6HK
By K9HZ · #33368 ·
Re: [AmateurRadioBuilders] Back in the Saddle
Yeah it does... Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois Owner ¨C Operator Villa Grand Piton ¨C
By K9HZ · #33367 ·
Re: More testing on PA
I can see me messing up those I will rewind for grins. Tim
By Tim · #33366 ·
Re: RA8875 display problems with T4.x - a visual study
*** Does it tune smooth? No ticks? - Jerry, KF6VB
By jerry-KF6VB · #33365 ·
Re: [AmateurRadioBuilders] Back in the Saddle
Doesn't the newer RF board have the solder holes in the middle of the attenuator pads? - Jerry, KF6VB
By jerry-KF6VB · #33364 ·
Update now available
All: Just heard from Amazon and the updated version is now being advertised: Jack, W8TEE
By jjpurdum · #33363 ·
Re: RA8875 display problems with T4.x - a visual study
-78dB? My V11 : with HC125 buffer, no shield on display, and 12V switching power supply
By Alain · #33362 ·