Feel free to add information to the wiki or make edits as needed. Please respect the work of others by adding your own content rather than editing or removing someone else's content unless doing things like updating URL's etc.?
|
Re: 2n2xx Transceiver R.I.P.
Rob there is no problem with anyone making their own board for their own use, it is the distribution of those boards that is the thing that I object to.? Jim does not want to not does he have the
By
Doug Hendricks
·
#418
·
|
|
Re: 2n2xx Transceiver R.I.P.
The use of ADE-1 (or SBL-1) diode ring mixers make it possible for the receiver to have a very large dynamic range.? It also makes it possible for the receiver to suck down the battery much more
By
Jerry Gaffke
·
#417
·
|
|
Re: 7 MHz Oscillator Ideas
Nick, I've made some measurements using the?SA612?oscillator in my WWV +?30m receiver. The crystal is a single, 10 MHz nominal.? Keep in mind that this is a simple DC receiver and may not meet the
By
Chuck Carpenter
·
#416
·
|
|
Re: What level math is in the RF design books?
Rob -- If you have a copy of "Experimental Methods of RF Design", take a look at chapter 2 "Amplifier Design Basics", first few pages, which discusses simplified models of semiconductor devices. I
By
Ramakrishnan Muthukrishnan
·
#415
·
|
|
Re: 2n2xx Transceiver R.I.P.
Doug, From Jim's email on November 10th: Finally, all of the documentation for the 2N2/XX is on my web site: www.k8iqy.com ( http://www.k8iqy.com ) so you can get the docs, build any of the 3 bands
By
Michael Maiorana
·
#414
·
|
|
Re: 2n2xx Transceiver R.I.P.
OK..no problem. My point of view was that it is a well documented hands on DIY project transceiver worthy of hand crafting for yourself..... not any money making ventures.... and since I learned how
By
Rob <roomberg@...>
·
#413
·
|
|
Re: 2n2xx Transceiver R.I.P.
Rob, the 2N22 is the intellectual property of Jim Kortge.? He has asked that it not be made available.? Please honor his wishes and stop promoting this project.? It would be wrong for anyone to
By
Doug Hendricks
·
#412
·
|
|
Re: 2n2xx Transceiver R.I.P.
NO WAY The project is only dead if you want to leave it resting. All of the wealth of documentation is there to make the 2n2xx tranceiver on ANY base you want... island pads... manhatten ... or PRINT
By
Rob <roomberg@...>
·
#411
·
|
|
Re: 2n2xx Transceiver
The designer has voiced he does not want to offer a board.? The project is dead. Lee, w0vt
By
Leland L. Bahr
·
#410
·
|
|
Re: 2n2xx Transceiver
i would like (at least) one jerry aa1of franconia nh
By
ohwenzelph
·
#409
·
|
|
Re: 2n2xx Transceiver
Steve, if the Chinese wanted to copy it, they would do it gerbers or no. If I were the designer, I would be more concerned about having to support the builders if I produced new boards. One way around
By
Dale Hardin KS4NS
·
#408
·
|
|
Re: 2n2xx Transceiver
I cut my gums on 741's and 2222's.? Put down for a couple.? Thanks, Howard, n3fel
By
[email protected]
·
#407
·
|
|
Re: 2n2xx Transceiver
You can look back through the message subject for the details. The designer of the 2N2-XX chose not to release the Gerber file for the PCB. Frankly, I wholeheartedly stand behind his decision.
By
sigcom1
·
#406
·
|
|
Re: 2n2xx Transceiver
What's the status of this? I would be interested in this as well.
By
Ken Thomas - N6KEN
·
#405
·
|
|
Re: Anyone Built the Rose 80?
Just keep in mind that the designer put those tuned circuits in for a reason. He did it so a bunch of spurs would not show up on the air and exceed FCC specs. Hard to know exactly where they all are
By
Jerry Gaffke
·
#404
·
|
|
Re: Anyone Built the Rose 80?
Jerry, This is very helpful, especially your explanation of the right side of T3. ?? I think I'll play with your idea of bypassing T3 and see what it does to the stability of the power out. And
By
John Roland <johnroland51@...>
·
#403
·
|
|
Re: Group Introduction: If you're going to post on the group, reply here!
Thanks for the group and all the effort it takes to moderate a group. Thank you! Jim KF9VV
By
Jim Klas <jimklas@...>
·
#402
·
|
|
Re: Anyone Built the Rose 80?
In my previous post I was wrong about why the secondary of T3 is non-resonant. Double tuned RF transformers are quite common in radio gear. I think on T3 for the Rose-80 with a secondary of only two
By
Jerry Gaffke
·
#401
·
|
|
Re: Anyone Built the Rose 80?
Thank you for the details about the caps and transformer.
By
Rob <roomberg@...>
·
#400
·
|
|
Re: Anyone Built the Rose 80?
John, I prefer to have these conversations within the forum Often there's somebody else with the extra info needed to resolve an issue. As Ryan says, people come to this forum because they want to see
By
Jerry Gaffke
·
#399
·
|