Re: TR-4 - Soft Finals?
Speaking of resistors, Where are you sourcing your resistors? Thanks George NE2I
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George Cortez Jr
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#84954
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Re: The Drake 2B and its Frequency Spread Limitations
Crystals are costly and it may be challenging to find them for the bands you're interested in.? If you're more interested in listening to shortwave broadcast than listening to the ham bands, my
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K5DH
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#84953
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Re: The Drake 2B and its Frequency Spread Limitations
Wikipedia has a good list of the major bands for short wave broadcast stations. Note that a number of broadcasters operate outside these ranges. https://en.wikipedia.org/wiki/Shortwave_bands You don't
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John KK6IL
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#84952
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Re: "I Never Should Have Gotten Rid Of......
Very interesting read. Thanks Ed! I am somewhat disappointed though, No mention of the HW-101 or the SB-102. My first build was the HW-101 Then the SB-102¡..I did build the 301/401 twins! A good
By
Joe - W7RKN
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#84951
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Re: TR-4 - Soft Finals?
Interesting topic about the aging resistors in our 4-line gear. Any time a rig comes into the shop ALL resistors get visibly checked, but some get more attention than others..... Here they are... All
By
VE7PS
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#84950
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Re: "I Never Should Have Gotten Rid Of......
There's also this: https://youtu.be/V-F_Fz2G7BI?si=cELxWrWCd9TPiqEv "Ed via groups.io" <wa6wgs@...> wrote: -- 73 -Jim NU0C
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Jim Shorney
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#84949
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Re: TR-4 - Soft Finals?
Make that "R13A is selected". I was looking at the schematic for my version (schematic 26000) and that resistor was still labeled simply R13, which was already taken by the "real" R13 at V3. Thanks,
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n4buq
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#84948
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Re: "I Never Should Have Gotten Rid Of......
Take a peek! https://www.eejournal.com/article/h-is-for-heathkits-and-hams-part-1-early-days-through-the-1950s/ https://heathkit-museum.com
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Ed
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#84947
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Edited
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Re: TR-4 - Soft Finals?
I have found that virtually all of the resistors in my TR-4 have not aged out of tolerance which is a little surprising. I did, though, replace the three 15R cathode resistors. I think one or two were
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n4buq
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#84946
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Re: Heathkit TC-1 Tube Tester, working
The one I have is still going strong as well. I've had it for probably 40 years and have never had to do anything to it. [email protected]> wrote:
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Terry WB0VQP
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#84945
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Re: "I Never Should Have Gotten Rid Of......
Sorry but I have no idea. I'll see if I can locate mine and if it has publisher information. Some of the booksellers at Hamfests used to sell them as I remember.
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Terry WB0VQP
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#84944
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Re: DRADE USERS NET UPDATE - 18 May 2025
Thanks! 73 ________________________________ Sent: Sunday, May 18, 2025 9:25 PM To: [email protected] <[email protected]> Subject: Re: [DRAKE-RADIO] DRADE USERS NET UPDATE - 18 May 2025 It's on
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Ralph AD9FM
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#84943
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Re: DRADE USERS NET UPDATE - 18 May 2025
It's on Sunday at 3:00 PM CST. 7238 Khz +- depending on QRM. 73 Stan KM4HQE
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Stan Gammons
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#84942
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Re: DRADE USERS NET UPDATE - 18 May 2025
7238 +/- QRM, 4 PM Sunday, EST. ?Welcome!
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Evan
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#84941
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Re: DRADE USERS NET UPDATE - 18 May 2025
Can someone please share the information on the Drake user's net? thanks Ralph AD9FM ________________________________ Sent: Sunday, May 18, 2025 6:44 PM To: [email protected]
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Ralph AD9FM
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#84940
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Re: TR-4 - Soft Finals?
Barry,Something else to consider - Every TR-n that I've worked on has had the plate current meter resistors aged high.? The result is that plate current measurement is not correct which of course
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Barry KJ5GQM
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#84939
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Re: "I Never Should Have Gotten Rid Of......
Speaking of Heathkit... I was fairly addicted to building Heathkit gear after the first kit when I was 10.? I think I spent about all the money I earned fixing people's TVs and radios as a teenager
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Howard Hoyt
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#84938
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Re: TR-4 - Soft Finals?
Out mains typically runs 126VAC and that puts the HV well over 700VDC (I don't recall the exact value at the moment). 6JB6s are rated at 770VDC plate voltage max so I think that's probably okay. I
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n4buq
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#84937
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Re: Hanvention tradition...broken
YES NO Rain, unbelievable weather for Hamvention! But it was also such a great thing to see you there Evan. Was so glad you were able to make it out there Evan. Rex WB8TDG wrote:
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rrex lehman
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#84936
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Re: TR-4 - Soft Finals?
I found a couple of references that agree that the standard US line voltage went to 120 in 1967. The US started at 110/220 in the late 1800s because Edison¡¯s light bulbs were designed for 110 ¡ª AC
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Steve Wedge, W1ES/4
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#84935
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