John, Please tell me what the relays look like, their dimensions, any manufacturer's names or numbers, if possible the contact arrangements and the coil voltage. It's very unusual for a liquid to be
Rick and Jim, I have a 505 that I acquired several years ago. I used it in the CW Classic Exchange this January and worked Idaho, New Jersey, Nevada, and California from here in New Mexico. It's a bl
I'd like to find a schematic for the 509 Argonaut. I want to add a 208 Audio Filter to my 505 Argonaut, and I understand that the 509 has the audio filter built-in. thanks, Jim Hanlon, W8KGI @arrl.ne
Thanks to everyone who replied to my request for a 208 schematic. It turns out I opened up the 208 box last night, and the only things inside were the selectivity switch and an empty connector that p
I'd appreciate some info on using a Model 208 CW Filter with my Argonaut 505. (It doesn't say "505" on the front panel, so I'm assuming it's an early one - Serial Number 01941.) Thanks! Jim Hanlon, w
I can't resist this. Got my Novice Ticket in March, 1952 and my gear was an HRO-50 and a home-brew 6AG7 tri-tet to a 6146 built into a BC-375 tuning unit. My Dad bought the HRO for my older brother a
Folks, For a fast-acting relay, you might want to consider a Mercury Wetted type. The Western Electric 275 and 276 relays have a switching time around 1 millisecond and they have zero bounce on eithe
Y'all, I worked on electrical connectors of all types for Bell Labs and for Sandia National Labs before I retired in 2003. From my professional experience, I want to recommend a Connector "Lubricant"
Y'all, I've taken on the job of talking to the Albuquerque Hamfest this coming August about significant advances in amateur radio technology from the beginning of radio, Marconi 1894, to the present.
Jon, I'd suggest that you measure the Q6 transistor that you removed to see what its condition is. An ohm meter measurement of the emitter-to-base diode and of the collector-to-base diode, both forwa
Your idea of setting up a clearinghouse for parts rigs is a good one. Many years ago Electric Radio Magazine used to maintain a list of "Boatanchor" parts rigs and their owners. The owners retained t
I just had a look at the display on my Triton IV 544, and now that you mention it the green digit does seem a little dimmer than the red ones. It's nothing that I've ever given any thought to up to t
I hope you folks will support this effort. Jim, W8KGI To: NMQRP@yahoogroups.comCC: W5YA@yahoogroups.comFrom: nmqrp@yahoogroups.comDate: Thu, 2 Apr 2015 08:54:37 -0600Subject: [nmqrp] very important A
I've had an antenna similar to Rick's up for several years now, and I've been quite pleased with it. Mine is a 33 foot, center-fed vertical doublet fed with 300 ohm open wire line. The support for my
Let's start with this assertion from a previous post. "No, it doesn't "tune" your 80 double ext.zepp, it creates a match between the transmitter and the FEEDLINE that allows the transmitter to dump p
On the question of tuning for Dip versus tuning for maximum output, let me offer a few words of, I hope, wisdom. First, the additional amount of power output that might be obtained by operating the r
Don't give up on that Argonaut 505. I had mine on 40 SSB yesterday afternoon and talked to a bunch of guys all over New Mexico. My QTH is Sandia Park, near Albuquerque. Jim, W8KGI
Mike, I've been reading the mail on the Ten Tec reflector about your 160 meter antenna problem. I use a similar antenna, 268 foot center fed with 600 ohm open wire, on all bands from 160 through 10 m