Re: WANTED: 811A or 572B Tubes
Dennis, I have seen very few failures of the RF Parts 572 tubes.? Yes, they are Chinese, but very good quality.? Almost all 572 failures I have seen no matter the manufacturer, has been from user abuse, not tube failure.? You might overcome your bias and try the RF Parts tubes.? Good warranty, good price (meaning, yes, they are expensive), and from what I have seen good durability when used properly. ? Joe ¨C W7RKN ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Diogenio via groups.io
Sent: Tuesday, April 20, 2021 8:10 PM
To: [email protected]
Subject: [DRAKE-RADIO] WANTED: 811A or 572B Tubes ? <<<Quote>>> Sorry, but I'm not interested in Chinese tubes of any sort, no matter who "hand selected" them like Taylor, etc. They are just not reliable enough for my hard-earned $$$$. ? <<<END QUOTE>>> ?
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WANTED: 811A or 572B Tubes
WANTED! 811-A or 572B tubes for my beloved "American Legacy Station..." a TR-7 driving a (ooops...another brand!) linear. Will consider either singles, or a full quad set. Can be used/tested good or NOS, but 811-A must be the "ribbed-plate" variant made in good ol' USA, like RCA, Amperex, GE, Cetron. Same goes for any 572s - HOWEVER...the Russian SVETLANA brand 572Bs are also quite good and acceptable.
Sorry, but I'm not interested in Chinese tubes of any sort, no matter who "hand selected" them like Taylor, etc. They are just not reliable enough for my hard-earned $$$$.
Send me a PM and alert me here if you have something of interest. Or, look me up on and my direct email is there.
Thanks very much!
Dennis, W1LJ
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Re: Replacement of #12 Fuse Bulb
Page 3 of this document list several places to get them.?
73's,
Mark, WB0IQK
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Re: Replacement of #12 Fuse Bulb
Thanks for all the input. After doing some more research, I found several of them online. Just had to look a little harder.?
Cheers,?
Marc-k7wxk
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Re: Replacement of #12 Fuse Bulb
Or a nearby lightning strike with the antenna connected. Ben W4SC ? Sent from for Windows 10 ?
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From: Richard KnoppowSent: Tuesday, April 20, 2021 01:16 To: [email protected]Subject: Re: [DRAKE-RADIO] Replacement of #12 Fuse Bulb ? ??? The lamp is used to protect the input of the receiver from nearby transmitters when the rig is used mobile. There is really no danger from just shorting out the socket. It is a standard pilot lamp, specs are similar to the No.47 but there is probably less lead capacitance. ? On 4/19/2021 8:17 PM, k7wxk wrote: > I just got finished troubleshooting a TR4 and found the #12 > fuse bulb open. I can return the rig to service by shorting the > socket, but ideally I would like to replace the fuse. Is there > a suitable replacement or are the original bulbs available > somewhere? I have read that it is not a fuse, but a variable > heat sensitive resistor. Surely I am not the first one to > encounter this dilemma. What say you? >? > Marc-k7wxk > ? -- Richard Knoppow 1oldlens1@... WB6KBL ? ? ? ? ? ?
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Re: Replacement of #12 Fuse Bulb
The lamp is used to protect the input of the receiver from nearby transmitters when the rig is used mobile. There is really no danger from just shorting out the socket. It is a standard pilot lamp, specs are similar to the No.47 but there is probably less lead capacitance.
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On 4/19/2021 8:17 PM, k7wxk wrote: I just got finished troubleshooting a TR4 and found the #12 fuse bulb open. I can return the rig to service by shorting the socket, but ideally I would like to replace the fuse. Is there a suitable replacement or are the original bulbs available somewhere? I have read that it is not a fuse, but a variable heat sensitive resistor. Surely I am not the first one to encounter this dilemma. What say you?
Marc-k7wxk
--
Richard Knoppow
1oldlens1@...
WB6KBL
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Re: Replacement of #12 Fuse Bulb
It is actually literally a light bulb. Not a new idea, the PTC characteristic of the filament is taken advantage of for cheap protection. They are available as others have written, but I imagine the actual type isn't too critical. 73 -Jim NU0C On Mon, 19 Apr 2021 20:17:21 -0700 "k7wxk" <Mtniebs@...> wrote: I have read that it is not a fuse, but a variable heat sensitive resistor.
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Re: Replacement of #12 Fuse Bulb
Go to wb4hfn? website? they are listed there on a replacement parts page.
Sent via the Samsung GALAXY S? 5, an AT&T 4G LTE smartphone
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-------- Original message --------
From: "k7wxk via groups.io" <Mtniebs@...>
Date: 4/19/21 23:17 (GMT-05:00)
To: [email protected]
Subject: [DRAKE-RADIO] Replacement of #12 Fuse Bulb
I just got finished troubleshooting a TR4 and found the #12 fuse bulb open. I can return the rig to service by shorting the socket, but ideally I would like to replace the fuse. Is there a suitable replacement or are the original bulbs available somewhere?
I have read that it is not a fuse, but a variable heat sensitive resistor. Surely I am not the first one to encounter this dilemma. What say you?
Marc-k7wxk
|
Re: Replacement of #12 Fuse Bulb
Marc;
#12 bulbs are available in lots of places still.? Here's one;
73
Peter
VE7PS
On 2021-04-19 8:17 p.m., k7wxk wrote:
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I just got finished troubleshooting a TR4 and found the #12 fuse
bulb open. I can return the rig to service by shorting the socket,
but ideally I would like to replace the fuse. Is there a suitable
replacement or are the original bulbs available somewhere? I have
read that it is not a fuse, but a variable heat sensitive
resistor. Surely I am not the first one to encounter this dilemma.
What say you?
Marc-k7wxk
|
Replacement of #12 Fuse Bulb
I just got finished troubleshooting a TR4 and found the #12 fuse bulb open. I can return the rig to service by shorting the socket, but ideally I would like to replace the fuse. Is there a suitable replacement or are the original bulbs available somewhere? I have read that it is not a fuse, but a variable heat sensitive resistor. Surely I am not the first one to encounter this dilemma. What say you?
Marc-k7wxk
|
Gentlemen:
Thanks for your comments and suggestions. I bought a BHI noise away, but it appears to have been reworked, and the power-connection broke ( diode cracked). I'm hesitant to try that brand again.
When it did work (intermittently) the noise reduction was acceptable, but the output volume weak,
David
N9PVF
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 |
KNB2_KNB2 K2 Noise Blanker Option?¡Á?1
Dave and Elecraft K2 Customer Support
After installation remarks for the Elecraft KNB2 Noise Blanker in
my Elecraft K2.? November 1, 2020? ?1300Z? 7.03000 MHZ
The KNB2 noise blanker very effectively removes "popcorn static" in
both narrow and wide pulse width modes. Also, both levels of low or high threshold removed the
static pulses.? Signal levels of the pulses are S9 plus in the Off
mode. Zero On.
I believe the source of the pulses are High Voltage power lines
that are located less than one mile away.? These are the lines
with the 100 ft. towers.
Thanks to Burdick and Swartz for designing a superior product.
Ken N4SO
David,?? You have old technology, and this one for the Elecraft K2 is very effective for High Voltage power lines.? I do not know
the source or meaning of your "pulse noise".? You want narrow and wide pulse width modes in a noise blanker.? Mine is completely effective.
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Not only played with it, we made it!? We would heat cinnabar in a distilling flask and get liquid mercury.? We would put it in little vials with cork stoppers and take it to school and play with it.? No one I knew every got sick, or became addlepated.? ('cept may be me! )? J ? We¡¯d make enough of it, and the labs in town would buy it from us.? Many summers, we could distill and sell around 20 pounds of the stuff. ? Now, if a mercury filled thermometer breaks in a classroom, the school is closed for a week while they decom the school!? SHEESH! ? I was going to show my sons how to make liquid mercury from cinnabar and they told someone at school.? I got a call from child services threatening me. ? Oh well!? Long time ago¡.sons are in their 40¡¯s now, and have children of their own¡teaching them how to get mercury from rock, among many other things!? (Western Nevada deserts are loaded with cinnabar.? Don¡¯t even have to dig for it.? Easy to see, being red and lays all around, if one knows where to go.) ? Joe ¨C W7RKN ?
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-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Bob Novas via groups.io
Subject: Re: [DRAKE-RADIO] Where to buy solder? ? You probably played with mercury as a kid, right?? I did too.
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Any interest in a TR4CW/RIT station?
I've finally run out of shelf space in the shack and am considering selling my TR4CW/RIT station to make room for something new. I am keeping my B-Line though.? The transceiver is in what I would describe as good condition physically and electrically it has a couple issues, I can explain if anyone is interested. I have the AC4 (upgraded with heathkit shop board), MS-4, RV4C, and original manual for the radio. I would really like to sell it locally for pick up or meet an hour or so from Fairborn, Ohio. Shipping would be quite expensive and hard to pack to prevent damage.? I'll be taking it out of line in the next few days and will be able to answer more questions and take pictures. If there is any interest please contact me off list for more information at NZ8J@...Thanks Tim NZ8J
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You're not the first person I've heard that from. We were smart enough to not actually EAT it. 73 -Jim NU0C On Fri, 16 Apr 2021 20:57:58 -0400 "Bob Novas via groups.io" <bob.novas@...> wrote: You probably played with mercury as a kid, right? I did too.
73
Bob, W3DK
-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Jim Shorney
Sent: Friday, April 16, 2021 8:46 PM
To: [email protected]
Subject: Re: [DRAKE-RADIO] Where to buy solder?
Not surprising at all, Joe. I have to deal with the nasty stuff at my day
job. Good old 63/37 truly is the best tool for the job.
73
-Jim
NU0C
On Fri, 16 Apr 2021 16:41:21 -0700
"Joe Wolfe" <w7rkn.7@...> wrote:
I absolutely will not use no lead solder on any work I do. 80% of the
dead Ameritron amplifiers are caused by no lead solder. I'll spend an
hour or two reflowing solder with leaded solder and the amplifiers
come back to life.
Joe - W7RKN
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf
Of Jim Shorney
Sent: Friday, April 16, 2021 4:25 PM
To: [email protected]
Subject: Re: [DRAKE-RADIO] Where to buy solder?
I'm just the opposite, I have 63/37 but keep lead free for when
absolutely necessary. Like many others I got a supply when a local
manufacturer changed over. Look around, you will find some. For
99.999% of my work no-lead solder is banned from my bench.
73
-Jim
NU0C
On Fri, 16 Apr 2021 16:10:20 +0000 (UTC) "Evan via groups.io"
<k9sqg@...> wrote:
I ?was able to buy an ?old roll of solder with lead 5-6 years ago
from a vendor on eBay. ?It was a necessity. ?Why? ?The soldering of a TCXO
into my Kenwood TS-590S was virtually impossible with lead-free
solder. ?Kenwood rep at Hamvention said to use traditional solder and
yes, it worked like a charm. ?I do ?have lead-free solder but keep the old stuff as needed.
-----Original Message-----
From: John <johnk5mo@...>
To: [email protected]
Sent: Fri, Apr 16, 2021 10:25 am
Subject: Re: [DRAKE-RADIO] Where to buy solder?
I'd imagine that you can still buy quality (non-Chinese, Non-ROHS
compliant) solder from suppliers on Ebay or via the normal
Newark/Mouser etc.
I'm nearing the end of the supply I got when Digital changed their approved manual solder specification and scrapped out hundreds of
rolls of Kester solder in our location alone . I snagged what I
thought would be a lifetime supply? before it went in the dumpster but
I lived longer than expected!
John K5MO
On Fri, Apr 16, 2021 at 10:15 AM Martin Potter VE3OAT
<ve3oat@...> wrote:
Almost off-topic.? It has been many years since I bought any solder,
but
am now approaching the need for another roll.? Where do people buy
good quality 63/37 tin/lead solder these days?? (Not interested in
lead-free or Chinese stuff.)
My preferred size is about 0.040 inch (0.10 mm), as I find the 0.031
inch
size a little difficult to work with.? A one pound roll would be nice.?
(At my age that would be more than enough.? HI)
Thanks for any suggestions.
Very 73,
... Martin? ?VE3OAT
|
You probably played with mercury as a kid, right? I did too.
73
Bob, W3DK
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-----Original Message----- From: [email protected] < [email protected]> On Behalf Of Jim Shorney Sent: Friday, April 16, 2021 8:46 PM To: [email protected]Subject: Re: [DRAKE-RADIO] Where to buy solder? Not surprising at all, Joe. I have to deal with the nasty stuff at my day job. Good old 63/37 truly is the best tool for the job. 73 -Jim NU0C On Fri, 16 Apr 2021 16:41:21 -0700 "Joe Wolfe" <w7rkn.7@...> wrote: I absolutely will not use no lead solder on any work I do. 80% of the
dead Ameritron amplifiers are caused by no lead solder. I'll spend an
hour or two reflowing solder with leaded solder and the amplifiers
come back to life.
Joe - W7RKN
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf
Of Jim Shorney
Sent: Friday, April 16, 2021 4:25 PM
To: [email protected]
Subject: Re: [DRAKE-RADIO] Where to buy solder?
I'm just the opposite, I have 63/37 but keep lead free for when
absolutely necessary. Like many others I got a supply when a local
manufacturer changed over. Look around, you will find some. For
99.999% of my work no-lead solder is banned from my bench.
73
-Jim
NU0C
On Fri, 16 Apr 2021 16:10:20 +0000 (UTC) "Evan via groups.io"
<k9sqg@...> wrote:
I ?was able to buy an ?old roll of solder with lead 5-6 years ago
from a vendor on eBay. ?It was a necessity. ?Why? ?The soldering of a TCXO
into my Kenwood TS-590S was virtually impossible with lead-free
solder. ?Kenwood rep at Hamvention said to use traditional solder and
yes, it worked like a charm. ?I do ?have lead-free solder but keep the old stuff as needed.
-----Original Message-----
From: John <johnk5mo@...>
To: [email protected]
Sent: Fri, Apr 16, 2021 10:25 am
Subject: Re: [DRAKE-RADIO] Where to buy solder?
I'd imagine that you can still buy quality (non-Chinese, Non-ROHS
compliant) solder from suppliers on Ebay or via the normal
Newark/Mouser etc.
I'm nearing the end of the supply I got when Digital changed their approved manual solder specification and scrapped out hundreds of
rolls of Kester solder in our location alone . I snagged what I
thought would be a lifetime supply? before it went in the dumpster but
I lived longer than expected!
John K5MO
On Fri, Apr 16, 2021 at 10:15 AM Martin Potter VE3OAT
<ve3oat@...> wrote:
Almost off-topic.? It has been many years since I bought any solder,
but
am now approaching the need for another roll.? Where do people buy
good quality 63/37 tin/lead solder these days?? (Not interested in
lead-free or Chinese stuff.)
My preferred size is about 0.040 inch (0.10 mm), as I find the 0.031
inch
size a little difficult to work with.? A one pound roll would be nice.?
(At my age that would be more than enough.? HI)
Thanks for any suggestions.
Very 73,
... Martin? ?VE3OAT
|
Not surprising at all, Joe. I have to deal with the nasty stuff at my day job. Good old 63/37 truly is the best tool for the job. 73 -Jim NU0C On Fri, 16 Apr 2021 16:41:21 -0700 "Joe Wolfe" <w7rkn.7@...> wrote: I absolutely will not use no lead solder on any work I do. 80% of the dead
Ameritron amplifiers are caused by no lead solder. I'll spend an hour or
two reflowing solder with leaded solder and the amplifiers come back to
life.
Joe - W7RKN
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Jim
Shorney
Sent: Friday, April 16, 2021 4:25 PM
To: [email protected]
Subject: Re: [DRAKE-RADIO] Where to buy solder?
I'm just the opposite, I have 63/37 but keep lead free for when absolutely
necessary. Like many others I got a supply when a local manufacturer changed
over. Look around, you will find some. For 99.999% of my work no-lead solder
is banned from my bench.
73
-Jim
NU0C
On Fri, 16 Apr 2021 16:10:20 +0000 (UTC)
"Evan via groups.io" <k9sqg@...> wrote:
I ?was able to buy an ?old roll of solder with lead 5-6 years ago from a vendor on eBay. ?It was a necessity. ?Why? ?The soldering of a TCXO into my
Kenwood TS-590S was virtually impossible with lead-free solder. ?Kenwood rep
at Hamvention said to use traditional solder and yes, it worked like a
charm. ?I do ?have lead-free solder but keep the old stuff as needed.
-----Original Message-----
From: John <johnk5mo@...>
To: [email protected]
Sent: Fri, Apr 16, 2021 10:25 am
Subject: Re: [DRAKE-RADIO] Where to buy solder?
I'd imagine that you can still buy quality (non-Chinese, Non-ROHS
compliant) solder from suppliers on Ebay or via the normal Newark/Mouser
etc.
I'm nearing the end of the supply I got when Digital changed their approved manual solder specification and scrapped out hundreds of rolls of
Kester solder in our location alone . I snagged what I thought would be a
lifetime supply? before it went in the dumpster but I lived longer than
expected!
John K5MO
On Fri, Apr 16, 2021 at 10:15 AM Martin Potter VE3OAT <ve3oat@...> wrote:
Almost off-topic.? It has been many years since I bought any solder, but
am now approaching the need for another roll.? Where do people buy good
quality 63/37 tin/lead solder these days?? (Not interested in lead-free or
Chinese stuff.)
My preferred size is about 0.040 inch (0.10 mm), as I find the 0.031 inch
size a little difficult to work with.? A one pound roll would be nice.? (At
my age that would be more than enough.? HI)
Thanks for any suggestions.
Very 73,
... Martin? ?VE3OAT
|
Thanks to everyone for their thoughts and suggestions. I will definitely keep looking around and check out the specific sellers that were suggested. I have an aversion to ePay unless I already know the merchant, and my present roll isn't all gone yet, so I have time.
I have never used lead-free solder but have heard and read lots of stories, all negative of course. Good old 60/40 (or thereabouts) for me!
Thanks again!
Very 73,
... Martin VE3OAT
|
I definitely recommend taking a look at 'goKimco.com'.? They are an older (started in 1978) industrial distributor of soldering and soldering supplies located in Mentor, Ohio. They have all the best brands (e.g. Kester) and excellent prices (their prices on Kester solder are 1/2 (or more) of the other prices I found on the web). Their web shopping store works very well, shipping cost is quite reasonable, service is excellent, etc, etc.? I ordered a pound roll of Kester thin solder and two Kester flux pens and had them 3 days later.? My recommendation: give them a look.
73
Bob Groh, WA2CKY
Blue Springs, Missouri?
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I absolutely will not use no lead solder on any work I do. 80% of the dead
Ameritron amplifiers are caused by no lead solder. I'll spend an hour or
two reflowing solder with leaded solder and the amplifiers come back to
life.
Joe - W7RKN
toggle quoted message
Show quoted text
-----Original Message----- From: [email protected] [mailto: [email protected]] On Behalf Of Jim Shorney Sent: Friday, April 16, 2021 4:25 PM To: [email protected]Subject: Re: [DRAKE-RADIO] Where to buy solder? I'm just the opposite, I have 63/37 but keep lead free for when absolutely necessary. Like many others I got a supply when a local manufacturer changed over. Look around, you will find some. For 99.999% of my work no-lead solder is banned from my bench. 73 -Jim NU0C On Fri, 16 Apr 2021 16:10:20 +0000 (UTC) "Evan via groups.io" <k9sqg@...> wrote: I ?was able to buy an ?old roll of solder with lead 5-6 years ago from a vendor on eBay. ?It was a necessity. ?Why? ?The soldering of a TCXO into my Kenwood TS-590S was virtually impossible with lead-free solder. ?Kenwood rep at Hamvention said to use traditional solder and yes, it worked like a charm. ?I do ?have lead-free solder but keep the old stuff as needed.
-----Original Message-----
From: John <johnk5mo@...>
To: [email protected]
Sent: Fri, Apr 16, 2021 10:25 am
Subject: Re: [DRAKE-RADIO] Where to buy solder?
I'd imagine that you can still buy quality (non-Chinese, Non-ROHS
compliant) solder from suppliers on Ebay or via the normal Newark/Mouser etc. I'm nearing the end of the supply I got when Digital changed their approved manual solder specification and scrapped out hundreds of rolls of Kester solder in our location alone . I snagged what I thought would be a lifetime supply? before it went in the dumpster but I lived longer than expected! John K5MO
On Fri, Apr 16, 2021 at 10:15 AM Martin Potter VE3OAT <ve3oat@...> wrote:
Almost off-topic.? It has been many years since I bought any solder, but
am now approaching the need for another roll.? Where do people buy good quality 63/37 tin/lead solder these days?? (Not interested in lead-free or Chinese stuff.)
My preferred size is about 0.040 inch (0.10 mm), as I find the 0.031 inch
size a little difficult to work with.? A one pound roll would be nice.? (At my age that would be more than enough.? HI) Thanks for any suggestions.
Very 73,
... Martin? ?VE3OAT
|
k7wxk
Jim Shorney
Bob Groh wa2cky