Hi Dennis, This is useful information but will not help a project like mine. Xtals directly on the operating frequency will be usable in a CW transmitter with a keyed xtal and straight though

HI All, Kanga UK, has a number of 5 MHz (60m) Crystals in stock. If any of you want to do a bulk order, I'll sort a discount Look at Welcome to Kanga Products Welcome to Kanga

​On Mon, Jun 15, 2015 at 8:23 PM, Bill Cromwell wrcromwell@... [4sqrp] <4sqrp@...> wrote: ​I might be misunderstanding Bill on this point, but according to ARRL, these are the center frequencies

How about we drop back to a SINGLE channel design? Pick only one of the five 60 meter channels and have this radio become a 4SQRP intercom? I'd leave that radio going 24/7 listening for 4SQRP

Hi Nick, I'm not sure of the tolerances in the frequency specs either expect when I did see them I thought they were tighter than what we have in the ham bands. 60 meters is shared with gov't

Yeah, I like that better than crystals anyway. But I wonder if youcould get it calibrated well enough that you could set it close enough to therequired discrete frequencies? I’m not sure how close

This may be heresy in this day of DDS, but how about a good, old fashioned LC VFO for a simple 60M rig? Of course it would need to use NCO/C0G for fixed caps, an air variable, other low TC components,

Nick, I have built plenty of DC receivers and have been disappointed by each of them. Apologies to the DC receiver fans, but I like single signal receive and do not like the potential

Hello Nick Sounds like a design idea to me! When do we get to see the prototype?? 72 Johnny AC0BQ -- QRP....."More smiles per Watt" 72 JOHNNY AC0BQ ..

Well folks, this might be a new low for the sprint. So far I've received 2 scores. Even Terry was shutout this time. Hopefully more will come out of the woodwork as the week progresses. I'll give

I think the output of a typical DDS is reasonably clean. If theobject is to make a receiver that tops Bob Sherwood’s list, some extra painsmight be required. No, phase noise can’t be

Info and flyer comming soon watch this page. Mark your calender for August 21-22, 2015 http://joplin-arc.org/?page_id=30

Are there any details on this event - when, where, website? Regards, Scott/n7net

Bill, No I don't have information to refute the phase noise situation. My thoughts are that at QRP levels, the problem is not as severe and may be able to be ignored. At higher power

Maybe a transverter for 60M would be easier. The originating frequency would be as pure as that of the source transceiver, only one crystal would be needed (I think), and it would allow the

Hi Don, It's the close in phase noise that concerned me Some hams (and engineers) have shown that it doesn't get filtered out. Apparently you have to also filter out the desired signal to get the

I guess last night's sprint was the "Second Sunday Sprint with Thunderstorms". Hope most people had better luck than Terry seems to have had. Regardless, if you had one (1) QSO or one hundred (100)

Bill, Following a DDS with a low pass filter will take care of most of the crud and the low pass filter on the PA will take care of the rest of it. I have looked at the spectrum of

I am putting together a group to display Elecraft gear at the Joplin Hamfest in August. If anyone would be able to show / talk about their Elecraft gear please contact me. John Humble AD0KA 417 782

Somehow, I have misplaced the traffic on twisted wire antennas...not sure who posted it... _ _ ... .. _ _ _ Doc K5OSA - QTH: EM04sr ARRL 4SQRP #801 - NAQCC #7625 - SKCC #10098 FISTS #17157 -