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I need to order another set and I want to keep them organized, easy to access. Suitable for storage as my work area is small. I end up losing too many and they easily disorganized. Anyone try a Loose-leaf binder? What do the Techs here use?
On my MFJ-207 I cannot tune the entire band of either the 40 or 20 meters. I use a small battery-operated Freq counter (plugged into MFJ-207) and the coverage is missing 7.200 to 7.370 and 14.100 to 14.600. Almost mathematical, right? Both the 40 and 20 bands are at the edge of the dial's...
mea culpa,
Got my parts today (all of them) despite the July shipping date on first invoice. I don’t understand the why and how of it all but I’m satisfied with my order.
Now it’s time to refresh this old Heathkit scope
Past few years, when I need several different parts, I've been ordering from Newark Electronics. My last order was a week ago, mostly caps and a few resistors, $60 total. Everything I ordered was marked "in Stock". A few days later I'm notified my order will not ship until July 15. :oops...
Got this from eBay a weeks or 2 ago. Ordered new caps and some select resistors. Input adjustable rear panel from 1/2w to 1kw (SSB I presume) just a jumper with a signal tap to scope inputs.
It's old but limited features so it's not so complicated I'd avoid using it. Will it have "use...
I don’t have as much electronics equip & tools as most Members but, it’s a lot. So when the relatively new Garment Steamer stops working, it looks funny if I can’t fix it. I need a thermal switch & all I need do is find one. Illegible Part # no help from Pur.
So I try AI for the 2nd time...
1st opportunity to try desoldering station (Yihua 948). I had a Lasko 42" tower fan < 1 year old that stopped spinning. I used the Yihua on one of the thru-hole PCB’s that needed attention. Have not cleaned the filter spring yet but nozzle sucked-up some big molten globs and cleared the pcb...
I’m preparing to attempt a repair on an Alinco DX-70T that needs SMT diodes replaced on the Band Pass Filter boards. There are 5 boards, one for each HF band and each board has a few SMT diodes on it. Over the past several months, I’ve been gathering Hot Air & De-Soldering equip. This is all...
I was outbid last week on a Kenwood 680v 10w version. I want an older low power HF rig I can pair with my low drive amp. I would replace all the parts that need it. Practice desoldering, lol. I do not want an SDR, maybe someday for Receive. I noted the US version of the Kenwood (100w) ran a...
I'm impressed at the information Co-Pilot replied with 6 pages, in seconds. I'd never used Pilot for radio stuff. I began with an HVPS query because the online Calculators had too many adds. Amp design by Pilot?, IDK what's next?
neil, NYC
I'm a newbie to Lifepo4 & got a 100ah.
I've read mention about using a regulated power supply with current limiting to charge but there never any details.
Maybe I'm over-thinking it.
If possible, I'd like to user my Astron VLS-35 for charging.
is it really as simple as setting the voltage...
A while ago, I lost plate current and found it was the single 5408 diode from B- to ground ("D-2", bypassed w/ low voltage .01 ceramic). The diode went open/No Connection.
I replaced the single 5408 with two in series (same batch) bypassed w/ 2x .005 Z5U ceramics). I got zsac back but...
Experimenting w/ shorting unused section of roller inductor before I replace it with some other device.
1st try yesterday:
5.6uH molded choke (1w sized-body) series connected to a 250w 50 ohm RF termination resistor w/ heatsink (TO-220 size). Seemed ok on 10 & 11 and 20 into DL with 5w AM...
I’m nearing the end of my 4cx rebuild -for this year anyway- and the resistor I’ve had between HVPS and plate choke has seen better days. It’s a single long body ww from almost 2 decades ago. After checking the W8JI website I see there is a better part for this function: RCD Part Number...
American UA748 op amps are getting hard to find. Have a batch of UA748's from PRC but I do not want to use them because they show different test results. Anyone ever use a metal can type IC in pcb mounted DIP-8 socket?
I have the datasheet but I'm not seeing anything that specific. It's an Opto22 series, DC60P, 3-24v control signal max.
Preparing a mock-up w/ 2 DC supplies so I can get a feel for it on the bench before I try to use it. I get that it's a current device.
Looks well designed but I do not recognize the big copper colored part attached between the roller and ground.
What sparked my curiosity is the Roller itself. My project makes far less than the 8877 but my roller gets very unruly at times. Roller looks the same but arcs to ground at various...
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