JT1ZW was good copy this morning at my noisy QTH in California. He seemed to be having good luck working W's transmitting on 1834.5 KHz and listening on 1958 KHz. Mike W4EF............. _____________
This distance between Arizona and California doesn't seem like much relative to Europe, but in my experience it makes a huge difference. I think I've heard 3 Euros Q5 from my city lot in Los Angeles
When I lived in Florida on 1/2 acre, Louis, I started out with a 50' tall Marconi (flat-top was an 80 meter dipole) using 4 elevated radials and 100 watts. It didn't work all that well. Later, I adde
Steve, I've got one of these 40' telescoping "Wonderpole" fiberglass masts: http://www.wonderpole.com/custom_telescoping_poles.html that I use to raise the far end of the horizontal top-loading wire
For a DXpedition kind of arrangement it looks like the Spiderbeam pole is a better solution (taller, lighter). The main reason I like the Wonderpole is that it is very easy to extend it in place with
Tree, et al: The good propagation to Europe even made its way down to Los Angeles last night well enough to penetrate my urban QRN. Heard S59A and I2ZFD with good signals, worked IK4WMA (he was so lo
This thread puzzled me as it seemed that Tom and Bob were vehemently agreeing with each other. Let me explain: a) What did Tom W8JI say when asked what was so bad about the SDR-1000? "It has essentia
It wasn't clear to me from Tom's post that the $40K FFT analyzer was any better than the SDR-1000 in terms of dynamic range. I think he just said that the $40K FFT analyzer was equally useful (or use
If what you say about the real close in performance is true, Bob (and I have no reason to believe its not), I am surprised that nobody has tried using the SDR-1000 as the IF of a superhetrodyne recei
Yes, I am all for facts. That's why I like being an engineer and not a politician. That was sort of the point of my tongue and cheek post, Tom. Your were saying that the SDR-1000 didn't meet your nee
Yeah, seems that is the achilles heal of the SDRs right now. As you suggest, it will be interesting to see how the equation shifts as the sound cards get better. 73, Mike W4EF........................
Ron, The maximum semiconductor junction temperature on this device appears to be around 200 degC. I had a hard time finding the thermal resistance data, but from what I was able to surmise, it appear
Note, I may unintentionally propagated some misinformation. The above is generally true for FET devices, but not for bipolar devices such as the 2N5109. The difference being that device gain in bipol
Digi-Key has a whole assorment of little heatsinks for various standard device packages (TO-39, TO-220, etc). The are very cheap. I am sure they have something similar to the ones you pulled from you
David, I sent Alpha an email inquiring about the MA4P4006D and they wrote back and pointed me to the Alpha Radio Products webstore: http://alpharadioproducts.com/merchant5/merchant.mvc?Screen=CTGY&St
I agree, Bob. Most people faced with Jon's QRN situation would have given up long ago. Even though I never made a QSO with Jon from DU9, I will always remember the morning I woke up and heard him com
I'll be around, Bob. That's one advantage of living on a small city lot, there are no farmers around to make me roll up my radials (they are equally way too short in both winter and summer) :-) 73, M
-- Original Message -- From: "Raoul Coetzee" <raoulc@smmcape.co.za> It is also important to note that not everybody lives in a high density Amateur Radio area/country. Those lucky Amateurs would be v
-- Original Message -- From: "Petr Ourednik" <indians@xsmail.com> I was very surprised with the ARRL Lab tests which showing the close-in Ip3 (5kHz) +10/+6.5dBm (preamp off/on) only. Well somebody (l
-- Original Message -- From: "Richard (Rick) Karlquist" <richard@karlquist.com> To: <Topband@contesting.com> Sent: Wednesday, July 04, 2007 7:51 PM Subject: Re: Topband: Omni VII performance on 160m