The AM Forum

Is anyone on here using one of the NM0S and 4SQRP Nouveau's on 75 meter AM?  What has been your experience and impression of that rig?

Thank you.
Jim
WA7DUY

Jim,

I hadn't heard of the Nouveau 75 until seeing your post here. That's an interesting AM transceiver kit and it seems to be reasonably priced. http://www.4sqrp.com/n-75.php (http://www.4sqrp.com/n-75.php) I wonder if the RF final is capable of higher output in that circuit. Maybe our Class E folks know more. I'll have to read up on Class G modulation.

Brad K4RT

Yes, Jeff-WA8SAJ checks into the AWA AM net I host each Sunday with one. 

The rig sounds excellent.  Its a long haul from his QTH out in Ohio to most of the East Coast stations, so he drives and amp with the rig and really has a nice sounding signal.

He said it was a very fun kit to build.  Oh, it has a Class E final.       

Joe-W3GMS

Pretty slick! I'm getting tempted.

The present audio passband is set to about 3kHz so if you want a 5kHz passband you need to change the two caps at U2.

C37 needs to be 0.0068 uF and C35 needs to be 680 pF.

for a 6kHz passband you need to have C37 = ~ 0.00560 uF and C35 needs to be ~ 560 pF.


Phil - AC0OB

Also tempted... having assembled several 4SQRP kits I can highly recommend them. Always fun to build.

Rob

Well, Temptation got the best of me and I placed my order.  Should be a fun build.  Just the thing for that long "old Buzzard" transmission during QSB.    It is interesting that it has a three-pole crystal filter, Class H mod and Class E RF, all in a little box, complete with microphone.  What a deal!

Actually small and portable enough to use at the festers.  Don't need no stinkin' VHF talkie anymore!

I got one too. All that I need is another project.

Got it yesterday.

Hey, Rick. Let me know when you find a 80M Rubber Ducky...

I suppose the next logical question would be: Any recommendations for an inexpensive 12v commercial amp that can be used with this rig in the mobile?

If you're interested in building something on the cheap, the Communication Concepts EB63 kit is a good candidate. You'll have to source a few other materials and it will require a couple of mods for AM but it works well afterwards.  I have one for my Small Wonder Labs Retro 40 and Retro 75.

I think I may have to pull the trigger on one of these... but... I still haven't assembled my Retro 75 yet!

received mine two weeks ago.  Finally assembled, will test tomorrow.  it has been a very busy month!  Very nice kit, fun build. excellent documentation, no missing parts.  GREAT!

Finished mine today, and it checks out just fine.  A bit low on positive peak modulation, but otherwise a fine build.


John, I was thinking more along the lines of a helmet dipole, with two chicken sticks as radiating elements.  For the Stone Mountain fest tomorrow, they will be super-conductors.   No need for liquid nitrogen, ole man weather will take care of the cooling in splendid fashion.

As far as the rubber duckie is concerned, I have one of these, the entire radio.  Should work fine....