In a message dated 2/4/2004 3:00:36 AM Central Standard Time, Rick@dj0ip.de writes: Even if you don't speak German, pictures and specs are all multi-language. If you need some of the stuff translated
In a message dated 10/23/2003 8:30:49 PM Central Standard Time, K3BU@aol.com writes: In short, efficiency of the loaded antenna is roughly proportional to the area under the current curve and positio
George Glad you are happy with your Century 22 and welcome to one of my favorite types of receiver... the DC receiver. Zero Beating is easy and an important art if done properly. Basics of zero beati
I forgot the obvious... where the name ZERO BEAT came from... Zero Beat is the center of the frequency you're tuning. If you're listening 550 cycles... or Hz... above (or below) the signal center...
About 10 years ago I did a lot of experimenting with SWR meter RF Sensor pick-up circuits. My favorite of all is the Stockton bridge using two toroids (Dave, you're brilliant!) Regardless of the RF P
The best Argosy mods I ever saw ( and incorporated) were in a Ham Radio Magazine, roughly 1986 vintage. These included audio level circuits to cut out phase noise, as well as changes in IF frequency
If memory serves me, Ten Tec is (was) the manufacturer of those front panel puch button switches on the Century 21. They were made cheap to save money. The were cheap. Most gave problems soon after t
If the rigs are more "modern" in design... usually all solid state...you can utilize a multiple electrolytic capacitor - I suggest 100 MFD 25 volt - input design in the positive line (usually positiv
If the rigs are more "modern" in design... usually all solid state...you can utilize a multiple electrolytic capacitor - I suggest 100 MFD 25 volt - input design in the positive line (usually positiv
Want to trade for a QRP xcvr, receiver or similar, working or not... or kit of some kind - of like value - or ????? : Ramsey 40 meter 20 watt linear amp kit - unbuilt, still in original unopened pack
Clark change the value of the capacitors and widen out your mod 220 filter to whatever bandwidth width you prefer. Much simpler, cheaper, and easier. Bill K5BDZ
Changing the bandwidth on TenTec crystal filters (and other "open" crystal filters) quite often can be easily accomplished by just changing the values of the capacitors in the filter, and re-peaking
Well, I can't stay quiet. Having been both a manufacturer (6 years) and consumer 45 years) of ham equipment, I have at least some qualifications to speak. Just look at all these reflector comments of
For those who thought the hardest part of Ham Radio 101 was passing the novice written exam, let alone (Heaven forbid) the constant conversion from feet and inches to the metric system, including all