I have a TT Delta along with a Pyramid power supply set up to turn on the Delta with one switch. I've decided that the Delta is not for me and it is for sale. I am located in Dubuque, Iowa and can de
I'm working on the alignment of an Aragonaut 509. I'm looking at the manual, page 3-10 which talks about the 80233 Oscillator board. The section labeled "Multipler Tuning", I am having a hard time tr
I received some help from off-list emails. Here is what I did: I set the bandswitch to 10 meters and the tuning to the low end of the dial. Using an external receiver, I found the oscillator signal a
My next need for this Aragonaut 509 is tuning one of the TX output filters. The manual says not to touch them. Ok! I'm for that, except someone has already been there and my 7 MHz filter is blocking
80262 - Front End It has RX filters and TX bandpass filters In my copy of the manual it is covered on pages 3-7 and 3-8 Chris The TX low pass board, 80260, shares one variable cap on all bands and th
I brought home a box of Ten-Tec Argonauts and accessories from the Jackson, MS hamfest. I have the first one in reasonable working condition. Now I am looking at the 2nd. The first job was to rebuild
I had a good day at the Jacksonville, Mississippi hamfest today. I acquired a box containing two Argonaut 509 rigs and some accessories from an SK estate. Is there any secret lore about Argonaut 509
I don't disbelieve what you are saying... but I wonder if you've got a bad solder joint or other kind of physical crack somewhere, some capacitor has more or less capacitance depending on the temp ex
I tend to think it is more than the antenna. In my Omni, if the drive is high I get an ALC light. Are you seeing that with drive set high? Sent from BlueMail
I must be misunderstanding.. My C21 hears both sidebands all the time. Its advantage over direct conversion is freedom from hum and images (wrong sideband).
There's a chip one can use in a rotary encoder application that uses a magnet . The chip senses the magnetic field as the magnet rotates. I'm wondering if an RIT could be built using a electro-magnet
I'm not an electronics whiz. But to me, if you're getting the noise in headphones but not in the speaker, it sounds like the headphone cord is picking it up. If you have cracked capacitors in the pow
I haven't used my Century 21 for quite awhile. For a few years it was my main rig (3-4 years ago). I don't remember there being any objectionable level of hum. I did use an impedance converter when u
Is there a better place to ask the technical questions? I'm happy to go elsewhere if that's what I should do. I have a TS-820 that I literally brought back from the dead with the help of the TS-520/8
A- Oh, I have no doubt that the people are on here. B - I don't think Joe's comments unfair. It's recently been overwhelmingly about the corporate stuff and not much tech. And that's fine. You all ar
Yup, so far I have ever only had it happen on 80. And switching to other bands, the rest seem fine. I'm thinking as a test I may see if I have some crystal of similar frequency, maybe not that exact
I seem to remember a series of letters or articles in QEX about the difficulties of characterizing SDR radios and how IP3 was no longer the thing. I'll see if I can find it.
In search of New Receiver Performance Paradigms Original - editorial by Doug Smith May 2006 Part 1 - Dec 2006 (Letters) Part 2 - Jan 2007 (letters) Part 3 - Mar 2007 (letters) My copies are in the s