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That's a relief. 73

This project hasn't quite made it to the breadboard and jumper-wire stage. Seems like starting with a schematic would be wise. I hear echoes of my dad who wouldn't let me touch his pile of wood "scraps" before showing him a drawing of what I was making. And how much of his wood supply I would...

Um, just how? 73

Um, okay. If you meant to attach a file, it didn't stick. 73

At least Brian is a few years away from retirement age. Looks like he'll have his half of the Barkett product line adapted to an e-commerce front end before we see the first glimmer of Greg's former tube-radio stock for sale. The only constant in the universe is change. 73

What I remember about that one was the primitive double-sided circuit board. It used small pins to connect a top-side foil to a bottom-side foil. The circuit board's holes lacked the metal "plate-through" sleeve that became standard by the 1980s. Those pins would develop cracks in the solder...

Rock on! You caught it. Not a fault I remember seeing. 73

Wow! A return from the dead. If the name isn't available, naming it the Lazarus meter probably isn't a marketing strategy to pursue. Would seem strangely apropriate. It will appeal to the analog retentives out there. No digits, Found all the info needed to restore it here...

A principle called "Occam's razor" frequently applies to faults like this one. It states that all other things being equal the simplest answer it the most likely. When a fault appears following a repair procedure, a side effect of the repair is probably how the new fault occurred. In this case...

If you're going to attach it with adhesive, that works just fine. This permits unsoldering the pigail wire from the terminal pin on the insulating block. Unsolder it from each outer pole and connect them directly to the center pin of each coax socket. This tends to reduce the standby SWR the...

Nope. Gary's been gone a few years now. As in deceased. 73

I remember Wireless Marketing. A former employee of ours set up a bench in his basement and did their warranty repairs. Kept him busy until they went under in a few years. 73

A more-common scenario is that someone drove it with excess power and blew out the transistor that senses the radio's RF and closes the relay. The schematic calls it the "RF Sniffer". Has two NPN transistors. Most any generic small NPN transistors would probably do the job okay. 2N3904, 2N2222...

Got a request from a customer. Wants a how-to for the diode swing mod applied to a RCI2995DX. The surface-mount main circuit board has the same basic circuits as the older 2950/70/90 radios, just laid out differently. The bill of materials is: 1) 1N4148 small signal diode. There are any...

If you're willing to mount a fan on it. Simple rule to judge a safe operating temperature is to hold your hand against the heat sink surface. If you have to let go after 5 or so seconds, that's pretty much the upper limit. If you have to draw away quickly, that's too hot. Turn down the carrier...

I checked RF Parts, and they don't have an open-frame relay with a 12-Volt DC coil. Here's a link to the solution we use. https://www.worldwidedx.com/threads/ameritron-al811-relay-headache-solved-my-way.265840/ 73

https://packaged-media.redd.it/av5h4bup3usg1/pb/m2-res_720p.mp4?m=DASHPlaylist.mpd&var=sgpssan&v=1&e=1775556000&s=5c064594f80341298dbc7e1fd6e66ab8314b6208 A cheap chuckle. 73

The Browning Mark 4A receiver has one crystal for each band it covers. The factory installed one at 22.82 MHz for channels 1-27 and 23.14 for channels 28-59. There was a crystal available to cover 32 channels below channel 1, 22.5 MHz. They were available for years from Barkett Electronics...

Q37 is the voltage regulator that provides a steady 9 Volts to the transmit/receive switching circuits. If it fluctuates like that, stuff gets twitchy. I became impatient with fixing this regulator circuit. You pretty much have to take Q35, D72 and D73 each loose to test them. We adopted the...

Whups! My mistake. Didn't look to see if the listing page had a box to specify quantity. The way the shopify page works a small box with the order quantity appears on the page. No box for quantity, no stock on hand. Sorry about that. 73