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Ameritron ALS-600 Power Meter Calibration
How do I calibrate the power meter in the ALS-600? I guess thru a hole in the label below the RF Out connector on the back. Joe? N9VX
By joe_word <joe_word@...> · #39971 ·
Re: Tuned input
Everything is in bound. I found the relays and made an offer on the trimmers and the seller accepted. Going to have 125 bucks or so into this. Will probably need some mica caps also. I have some, Fred
By W7WRX · #39969 ·
Re: 144 mhz tuned input for a GG YC-156 ??
I could tell I was beating a dead horse when all the HFers ignored my earlier comments about plate bypass capacitors made of two metal plates with an insulating sheet between, and then when they kept
By Steve · #39968 ·
Re: 144 mhz tuned input for a GG YC-156 ??
Steve, K0XP said "Try a 3/4 wavelength stripline. Get the design info from W6GGV's articles published in the Nov. '80, and Jan. through April '81 issues of Ham Radio." Thats right, Steve! a stripline
By Brandon DX · #39967 ·
Re: 144 mhz tuned input for a GG YC-156 ??
If I start from the assumption regarding the input impedance 35 ohms in parallel with 92 pF, this is equivalent to 3.37-j11 in series form. If we calculate the 'L' adapter, it gives this Why would you
By Fran?ois · #39966 ·
Re: 144 mhz tuned input for a GG YC-156 ??
PIEL http://tonnesoftware.com/piel.html Sent: Friday, January 05, 2024 11:44 PM To: '[email protected]' Subject: RE: [ham-amplifiers] 144 mhz tuned input for a GG YC-156 ?? PIEL 73 N2LYM Sent:
By Mike Santas · #39965 ·
Re: 144 mhz tuned input for a GG YC-156 ??
PIEL 73 N2LYM Sent: Friday, January 05, 2024 11:21 PM To: [email protected] Subject: Re: [ham-amplifiers] 144 mhz tuned input for a GG YC-156 ?? Jim, is there public domain software program
By Mike Santas · #39964 ·
Re: 144 mhz tuned input for a GG YC-156 ??
Jim, is there public domain software program that helps with Pi network design? aka, I'm looking at 8877 50Mhz project in 2024 73 Robert W5AJ
By Robert, W5AJ · #39963 ·
Re: 144 mhz tuned input for a GG YC-156 ??
What does the piece of Heliax do?
By mike repinski · #39962 ·
Re: 144 mhz tuned input for a GG YC-156 ??
Try a 3/4 wavelength stripline. Get the design info from W6GGV's articles published in the Nov. '80, and Jan. through April '81 issues of Ham Radio. Steve, K0XP
By Steve · #39961 ·
Re: 144 mhz tuned input for a GG YC-156 ??
A pi-circuit 73 Peter, DJ7WW -----Original-Nachricht----- Betreff: [ham-amplifiers] 144 mhz tuned input for a GG YC-156 ?? Datum: 2024-01-05T20:51:29+0100 Von: "Jim VE7RF" <jim.thom@...> An:
By Peter Voelpel · #39960 ·
Re: 144 mhz tuned input for a GG YC-156 ??
Jim, are you building this?
By mike repinski · #39959 ·
Re: 144 mhz tuned input for a GG YC-156 ??
YC-156 is good up to 150 mhz.? ? It will be used on 144 mhz. Yes, the 8877 has a 38.5 pf? between cathode and grid....and is good up to 250 mhz. Question is.... how the hell do u make a tuned input
By Jim VE7RF · #39958 ·
Re: 144 mhz tuned input for a GG YC-156 ??
Yes, that's 2 1/2 times the value for a 8877 that works good up to 222. Will this tube go that high?
By mike repinski · #39957 ·
144 mhz tuned input for a GG YC-156 ??
Ok, how does one go about building a tuned input for a 144 mhz amp, using a YC-156 tube ? The input C on the YC-156 is huge,? 92.5 pf? ?( grid to cathode). This is for a cathode driven? ?YC-156 (
By Jim VE7RF · #39956 ·
Re: HomeBrew Amp Chassis
KB1SEL got the premade chassis and cabinet from ICA manufacturing in? NJ.? They come completely pre-fabricated and ship flat. All you do is assemble with machine screws. On most of em, they have the
By Jim VE7RF · #39955 ·
Re: HomeBrew Amp Chassis
Keep in mind that sometimes, paying somewhat more for the chassis can make up for a lower shipping cost, too. Compromise, compromise, compromise... Steve, K0XP
By Steve · #39954 ·
Re: HomeBrew Amp Chassis
The Amp Repair guy has a few videos on Utube constructing a few amps. He purchase his chassis ready made. Check Utube for the name of the supplier. And yes there are metal suppliers listed on the web.
By mike repinski · #39953 ·
Re: HomeBrew Amp Chassis
My little local town has Al. supplier who will guillotine pieces to size for free If the order is over ?10.... I expect most towns will have similar. I never bend pieces (although my Al. supplier can
By Tim Fern · #39952 ·
HomeBrew Amp Chassis
What's good choice for obtaining Aluminum plate, Aluminum Chassis.. I'm searching ebay, lots of picks.? Others? Short story, About to cannibalize old amp for chassis but think NEW would turn out
By Robert, W5AJ · #39951 ·