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Messages - ThaDood

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This was my go-to site for when I built my 6M FM repeater years ago,    http://www.repeater-builder.com/rbtip/index.html    You can easily spend day researching this site. They can even build a repeater for you out of a GE MASTR II rig, albeit it takes them months to do it on their time.   

Huh? / The Sun back in the news? Looks like it.
« on: April 28, 2020, 1716 UTC »
Looks like our tax $$$$$ are going into a probe to sun dive.       https://www.newsweek.com/sun-solar-cycle-this-month-1495930

Amateur Radio / A 6M rivival here locally? Maybe.
« on: April 25, 2020, 1947 UTC »
In the SW WV area, folks are trying to get some 6M activity going on both USB, (50.125MHz, 50.130MHz.), and FM, (52.525MHz.). Good!!!! With HF getting clogged with T-storm noise, 6M looks like a nice local alternative.

A couple of improvements that can be done to the Talking House / I Am Radio transmitter is to GND the master OSC crystal to chassis GND. That helps to reduce, but not eliminate, the PM (Phase MOD.), coming from that. Then, to smooth out the quality of the modulation and reduce the harmonics, run several GND braids from main PC board GND to the chassis. Mine sounded much cleaner, louder, and fuller, after that. No, it will not put out a more powerful carrier, that will stay a dead-nuts 20-some mW's. But, it will make that TX sound way cleaner. I wish that I could totally eliminate that PM in it. On a C-QUAM receiver, it drives that nuts going in and out of stereo. You can also hear that PM in SSB mode. Other-wise, my I Am Radio TX is a nice sounding AM mono TX.   

Part 15 AM and FM Station Operation / Re: Part 15 AM and FM
« on: April 25, 2020, 1931 UTC »
Oh yeah??? Here's mine,    https://vk.com/realfreeradio               More bitching this weekend, than anything else. The local LPFM station digs it, since it permissibly covers where they don't. And, allows me to lazy-cast.

Part 15 AM and FM Station Operation / Re: part 15 distance records
« on: April 25, 2020, 1926 UTC »
Hey Matt_B!!!! Try going Carrier-Current if you are APT bound. That's how I started out, with a Panaxis AM-100 TX, (100mW TX.), to a 100uH coil and Neutral Injected that. How did it work? I was GND Floor of an APT complex and it covered into several buildings. So, not bad. Today, I have some better gear and use either the LPB T-8, or the Radio Systems CP-15, AM C-C Couplers. BTW, if you can, best to use an Independent GND rod to the Coupler. Also, look for any books about the subject from Ernest Wilson and James R.Cunningham to download and apply. A lot of stuff you can build yourself, and you might have to, since anytime LPB and RS stuff come up on ebay, they get bought out almost immediately. So, someone wants that stuff, badly.

Amateur Radio / 20M AM? Sure... Why not?
« on: April 16, 2020, 1710 UTC »
Came home last night to tune-in to some of the big-gun AM'ers on 3880kHz around 06:00UTC. I heard them mention that there's folks trying 20M AM again on 14.330MHz. The last time that I heard anything there, and actually worked 'em, was during the AM Rally. Although last night 3880kHz AM was pretty much lightning crash free, 20M AM is a decent thing to try to get away from that, for sure. And, with Sporadic "E" mysteriously picking up in April, (Hey... I'll take it.), 29.000000MHz AM 10M might see some activity again. BTW, anyone doing AM on 17M?

Huh... The Galaxy II was a very popular Export-type CB, not really legal to use in the USA, since it covered the non-USA FREQ's from 26MHz to 28MHz into the 10M Amateur Band. I've found PIC's and alignment from CB Tricks, but not the manual,   http://www.cbtricks.com/radios/galaxy/plus/index.htm    So, I hope that helps, somewhat. FM, (Frequency Modulation), is just the modulation mode, not a FREQ band. The USA and Canada are actually the few countries to not use FM in the 40 CB channels. As far as the added knob goes? Might be to control the transmit RF power output. I've never had the Galaxy II rig, but quite a few of my friends did on CB. Anyway, I hope that helps some. CB walkie-talkies should work on that, as long as they are the ones that are within the 40 CB channels, and not UHF FRS radios.

Equipment / Re: L band antennas
« on: April 08, 2020, 1832 UTC »
Hmmmmmmmmmm, with some modification, that looks like it could be a decent 1.2GHz design for 1296 SSB in Amateur Radio.   

Part 15 AM and FM Station Operation / Re: Part #15 gear out there.
« on: April 06, 2020, 0527 UTC »
Huh... Might be OK to Neutral-Inject in to the Neutral of the home AC power, but I certainly wouldn't couple that to the HOT. Heck, for the price, you can't beat it. And, since it's a kit form, most likely you can improve it to work much more efficiently on the AM BC band. That 1MHz limit is a bit FREQ limiting, since most Carrier-Current ops use the lower part of the band, since the lower FREQ's can ride the long power lines further. 

10/11 meters / KP4's from Porta Rico 23:10UTC, 28.444.3USB.
« on: April 06, 2020, 0458 UTC »
10M to a KP4CQ just picking them from up and down the East Coast. Being that south is my terrible RF direction, signals MAX'ed out to an S3, and I wasn't able to work this one.

Hmmmm, yeah... But, at least with the preceding circuit and method above the Part #15 user has more flexibility. And, no mysterious envelope to open for a nation emergency. Uh-huh...

Part 15 AM and FM Station Operation / Re: Part #15 gear out there.
« on: April 05, 2020, 0628 UTC »
Oh boy... On a Carrier-Current Coupler, you may have to roll your own, since LPB and Radio Systems are gone. However, there are power line couplers for mining companies, (At least, there use to be.). That was the only way that they could send down a radiating signal into a mine shaft was to couple to the power lines going down there. With all of these mining companies going bye-bye, I'll bet one can be had. Ernest Wilson, formally of Panaxis Productions, had shown in is Carrier-Current books on how to build a coupler. Also, look for on-line .PDF books by James R. Cunningham for this to download. Basically, you are looking for a medium wave tuning network that let's you tune down to very low impedance, like 10 Ohms and less. Over 20 years ago, JTA gave me a Radio Systems TR-20 transmitter and a CP-15 coupler. The problem was, it looked like lightning directly hit it. The TR-20 was a total loss, with thumb sized burnt holes in both the PS and Finals boards, but the CP-15 Coupler was fixable, and I'm using that today. So, ya never know. 

Boomer brought to my attention that someone on www.part15.org bitched that Part #15 ops are not required to have an Emergency Alert System (EAS). And no wonder... When I worked in TV broadcasting, that station owner picked up a used EAS for $3,000.00. Hmmmmmmmmmmm, that more than most Part #15 complete stations out there. Someone did come up with an idea there to use a Kenwood car stereo with an EAS feature for $100.00. Yeah, way better. Well, for years I've pondered on using a SAME Weather Alert Radio and came up with the following put-together project for around $50.00!   https://archive.org/details/yepoormanseasrev2.1/mode/2up    Works great! And the price is certainly right. And, you really don't need that much in electronics experience to build and put it all together. Might not be a bad idea to have something like this on our stations with the conditions that we are experiencing today.

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