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I wonder If K&W? crystal? in Prague? , OK? is still in business.? I always Felt their crystals ?were?? just as good as ICM... Never had a Bad Crystal from them...? great company. shame if

I have derived a COR from a handheld by placing the diode of an opto-isolator in series with the receive LED and using the transistor in the opto-isolator for the COR.? You can get a negative going

expensive crystals but great radio that made..love the crisp audio on the HT220

That's great news. Glad you persisted. Not one to be picky (who, me?) but the article does mention cleaning the solder pads and all leaked residue after the old caps have been removed, as well as

Good evening Bob & anyone else following- Well, not one to give up (or perhaps not smart enough too), I printed off all the schematics I could find and literally taped them together to make larger

If i may add,i think i add 2-3 contacts with Ted before,,,years ago. he was a nice guy,a gentleman may he rest in peace and add great contact outhere ! 73/s Gervais ve2ckn

Rest In Peace Ted... what a gentleman. One of the first people I met on RB to help me offline with projects and sourcing hard to find stuff nearly a decade ago. You will be missed.

I had a chance to visit "Lefty's Lair" a while back while he was in the process of moving south. He was definitely a purveyor of the obscure and sometimes downright odd items. He was certainly an

Confusing matters are FM radio manufacturers which advertise "variable reactance modulation". That is clear as mud. A variable reactance such as a varactor in a VCO tank circuit or across a crystal

Nice guy, I first met him in around 1973 from Spectronics days. Ted showed me an unusual use for his dishwasher. Cleaning crusty old Motrac control heads! -- The Real RFI-EMI-GUY

Very sad news indeed.. I bought 6 UHF 20W GE MVPs from Ted about 22 years ago, later some Redicom UHFs and a Redicom book, and other odds & ends over the years. When the 6 MVPs arrived there was a 7th

I did something similar with an MX300 years ago. Like Andy said, these radios usually have a Bridge Tied Load speaker output. They float at about 1/2 VCC when the radio unmutes and so that point can

Although I didn't personally know Ted, I did business with him, and he was a great, knowledgeable guy.? He, like a lot of us, will be greatly missed when we are gone... I have a 38 yr old, EE,

Circuit-wise, in an FM transmitter you are modulating an oscillator and are directly changing its _frequency_. In a PM transmitter you do not modulate the oscillator -- it outputs a constant

Hi Don, *>So what is True FM? Vs.? Whatever FM * "True FM" is a silly term, in my opinion. It's used by folks who want to strongly distinguish FM from PM. Why they can't simply use "FM" or "PM" to

True FM is achieved by actually modulating the carrier's FREQUENCY. 'UnTrue FM' is usually achieved by modulating the PHASE of a fixed carrier and properly shaping the audio frequency response of the

Sad news- Ted was a fixture of the industry, especially here in the Chicago area. I always enjoyed my visits with him. 73's OM. TomW9SRV

As Ham radio operators, some people getting into Amateur radio and others for some reason think We know everything WOW I wonder where they get that from, LOL that’s almost as bad as saying Ham Radio

It is with great sadness that I have to report the passing of Ted Bleiman, K9MDM, AKA Lefty due to complications from CoVid-19, on Saturday February 20, 2021. Those of us in the ham and radio

Now that FM mode is available on the V3 card, I'm thinking about using it as an external controller on my MSF5000 repeater.? I just updated my V3 card with the latest software, and upgraded to the