Re: CORRECTION. [DRAKE-RADIO] Outer Coaxial Jacket Removal for a Long Length
I should have said soldering GUN. ?The tip is also excellent for cutting double braided dacron or nylon rope.
On Tuesday, January 23, 2024 at 09:34:20 PM EST, Evan via groups.io <k9sqg@...> wrote:
I've always used a soldering iron for this type of project. ?There is a "plastic cutting tip" available that has a flattened nose ideally suited for such applications.
On Tuesday, January 23, 2024 at 04:41:19 PM EST, Michael Smith via groups.io <tw8kcabpilot@...> wrote:
I would like to put up a vertical sleeved 1/2 wave dipole, using Belden 8279, 75 ohm coax. ?I have been pondering a good way to remove approximately 11 contiguous feet of the outer jacket, of course without nicking the copper shield, but haven¡¯t come to any ideas, that I sense will work well. ?The Wireman and DXE could offer no tools or procedure. ?A sharp blade needs to be run along the length of the coax, while maintaining a precise depth. ?The coax OD is 0.22 inches and the outer jacket wall thickness is 0.074 inches, polyethylene. ?Perhaps a small V-block could be used to stabilize the round coax in position, while holding a knife blade pressed on the outer jacket and pushing down on the cable at the same time to keep the coax in the V, and pulling the coax through; I would not cut completely through the jacket when doing this, but after cutting the entire length, tear the outer jack off. I think I could do this with two hands. ?Any ideas?
Thank you.
73, Michael Smith, N4KZO
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Re: Outer Coaxial Jacket Removal for a Long Length
I've always used a soldering iron for this type of project. ?There is a "plastic cutting tip" available that has a flattened nose ideally suited for such applications.
On Tuesday, January 23, 2024 at 04:41:19 PM EST, Michael Smith via groups.io <tw8kcabpilot@...> wrote:
I would like to put up a vertical sleeved 1/2 wave dipole, using Belden 8279, 75 ohm coax. ?I have been pondering a good way to remove approximately 11 contiguous feet of the outer jacket, of course without nicking the copper shield, but haven¡¯t come to any ideas, that I sense will work well. ?The Wireman and DXE could offer no tools or procedure. ?A sharp blade needs to be run along the length of the coax, while maintaining a precise depth. ?The coax OD is 0.22 inches and the outer jacket wall thickness is 0.074 inches, polyethylene. ?Perhaps a small V-block could be used to stabilize the round coax in position, while holding a knife blade pressed on the outer jacket and pushing down on the cable at the same time to keep the coax in the V, and pulling the coax through; I would not cut completely through the jacket when doing this, but after cutting the entire length, tear the outer jack off. I think I could do this with two hands. ?Any ideas?
Thank you.
73, Michael Smith, N4KZO
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Re: Outer Coaxial Jacket Removal for a Long Length
I wouldn't bother. The radio waves don't care. Ask anyone in the end-fed half wave crowd. They know how easy it is to make the coax radiate. What you will need is a common mode choke a quarter wave down the shield. 73 -Jim NU0C On Tue, 23 Jan 2024 13:41:17 -0800 "Michael Smith via groups.io" <tw8kcabpilot@...> wrote: I would like to put up a vertical sleeved 1/2 wave dipole, using Belden 8279, 75 ohm coax. ?I have been pondering a good way to remove approximately 11 contiguous feet of the outer jacket, of course without nicking the copper shield, but haven¡¯t come to any ideas, that I sense will work well. ?The Wireman and DXE could offer no tools or procedure. ?A sharp blade needs to be run along the length of the coax, while maintaining a precise depth. ?The coax OD is 0.22 inches and the outer jacket wall thickness is 0.074 inches, polyethylene. ?Perhaps a small V-block could be used to stabilize the round coax in position, while holding a knife blade pressed on the outer jacket and pushing down on the cable at the same time to keep the coax in the V, and pulling the coax through; I would not cut completely through the jacket when doing this, but after cutting the entire length, tear the outer jack off. I think I could do this with two hands. ?Any ideas?
Thank you.
73, Michael Smith, N4KZO
-- 73 -Jim NU0C
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Re: Outer Coaxial Jacket Removal for a Long Length
I have really good luck using a sharp box cutter to first rotate the coax under the knife, pressing hard enough to cut the insulation but not hard enough to cat the braid. Then I cut a lengthwise cut in the same way. The insulation rolls off comfortably leaving the braid undamaged. I have stripped several feet from a piece of coax using this method.
Of course, use a knife that is sharp enough to require care during use.
Gary
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On Jan 23, 2024, at 7:36?PM, KL7AM <w7apm@...> wrote:
There is a metal tool used for stripping Romex type wire that ma work well for you. Kind of a narrow clamshell looking thing that is all metal and very reasonably priced Search this on Amazon Gardner Bender CR-100 4-Inch Romex Cable Ripper, Metallic
From:?"Barry" < n4buq@...> To:?"DRAKE-RADIO" < [email protected]> Sent:?Tuesday, January 23, 2024 4:31:35 PM Subject:?Re: [DRAKE-RADIO] Outer Coaxial Jacket Removal for a Long Length
On the page Warren posted, this tool showed up:
Looks like it might work? 73, Barry - N4BUQ
From:?"NI5L" <ni5l@...>
To:?"DRAKE-RADIO" <[email protected]>
Sent:?Tuesday, January 23, 2024 7:24:32 PM
Subject:?Re: [DRAKE-RADIO] Outer Coaxial Jacket Removal for a Long Length
Something like this would work.
--?
73 de NI5L
Warren
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Re: TR-7 missing digit's on display
The DR7 is such a fragile board, a true PITA to work on, I would leave it alone if it works. Those two capacitors are only there to prevent oscillation of the regulator and serve no function in offering the correct voltages on either end of the regulator, unless shorted of course.?
A working DR7 is a DR7 best left alone!
Gary
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On Jan 23, 2024, at 4:15?PM, Steven KE2AXS <sosborne8270@...> wrote:
I believe those Rubycon caps are originals. I have seen Richy and Rubcon caps in a lot of Drake gear. Thats is what was in my TR7 when I replaced them 5 years ago. Even back then they had considerable leakage. I see some 1979 date codes on your chips. ~44 years for an electrolytic cap is probably pushing your luck.
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Re: Outer Coaxial Jacket Removal for a Long Length
There is a metal tool used for stripping Romex type wire that ma work well for you. Kind of a narrow clamshell looking thing that is all metal and very reasonably priced Search this on Amazon Gardner Bender CR-100 4-Inch Romex Cable Ripper, Metallic
From: "Barry" <n4buq@...> To: "DRAKE-RADIO" < [email protected]> Sent: Tuesday, January 23, 2024 4:31:35 PM Subject: Re: [DRAKE-RADIO] Outer Coaxial Jacket Removal for a Long Length
On the page Warren posted, this tool showed up:
Looks like it might work? 73, Barry - N4BUQ
From: "NI5L" <ni5l@...>
To: "DRAKE-RADIO" <[email protected]>
Sent: Tuesday, January 23, 2024 7:24:32 PM
Subject: Re: [DRAKE-RADIO] Outer Coaxial Jacket Removal for a Long Length
Something like this would work.
--
73 de NI5L
Warren
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Re: Outer Coaxial Jacket Removal for a Long Length
On the page Warren posted, this tool showed up:
Looks like it might work?
73, Barry - N4BUQ
From: "NI5L" <ni5l@...>
To: "DRAKE-RADIO" <[email protected]>
Sent: Tuesday, January 23, 2024 7:24:32 PM
Subject: Re: [DRAKE-RADIO] Outer Coaxial Jacket Removal for a Long Length
Something like this would work.
--
73 de NI5L
Warren
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Re: Outer Coaxial Jacket Removal for a Long Length
Something like this would work.
--
73 de NI5L
Warren
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Re: Outer Coaxial Jacket Removal for a Long Length
HI Mike¡. ? Contact your closest electrical contractor and talk to one? of their technicians¡they have a tool, that is adjustable to remove wire jackets from all sizes of wires. Give him/her a ?pack of beer or soda and he would probably strip a 500 foot roll of coax for you!? J? (Well..maybe no-o-t-t-t that much¡but¡.!!) ? Joe ¨C W7RKN ? From: [email protected] [mailto:[email protected]] On Behalf Of Michael Smith via groups.io
Subject: [DRAKE-RADIO] Outer Coaxial Jacket Removal for a Long Length ? I would like to put up a vertical sleeved 1/2 wave dipole, using Belden 8279, 75 ohm coax. ?I have been pondering a good way to remove approximately 11 contiguous feet of the outer jacket, of course without nicking the copper shield, but haven¡¯t come to any ideas, that I sense will work well. ?The Wireman and DXE could offer no tools or procedure. ?A sharp blade needs to be run along the length of the coax, while maintaining a precise depth. ?The coax OD is 0.22 inches and the outer jacket wall thickness is 0.074 inches, polyethylene. ?Perhaps a small V-block could be used to stabilize the round coax in position, while holding a knife blade pressed on the outer jacket and pushing down on the cable at the same time to keep the coax in the V, and pulling the coax through; I would not cut completely through the jacket when
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Re: TR-7 missing digit's on display
I believe those Rubycon caps are originals. I have seen Richy and Rubcon caps in a lot of Drake gear. Thats is what was in my TR7 when I replaced them 5 years ago. Even back then they had considerable leakage. I see some 1979 date codes on your chips. ~44 years for an electrolytic cap is probably pushing your luck.
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Outer Coaxial Jacket Removal for a Long Length
I would like to put up a vertical sleeved 1/2 wave dipole, using Belden 8279, 75 ohm coax. ?I have been pondering a good way to remove approximately 11 contiguous feet of the outer jacket, of course without nicking the copper shield, but haven¡¯t come to any ideas, that I sense will work well. ?The Wireman and DXE could offer no tools or procedure. ?A sharp blade needs to be run along the length of the coax, while maintaining a precise depth. ?The coax OD is 0.22 inches and the outer jacket wall thickness is 0.074 inches, polyethylene. ?Perhaps a small V-block could be used to stabilize the round coax in position, while holding a knife blade pressed on the outer jacket and pushing down on the cable at the same time to keep the coax in the V, and pulling the coax through; I would not cut completely through the jacket when doing this, but after cutting the entire length, tear the outer jack off. I think I could do this with two hands. ?Any ideas?
Thank you.
73, Michael Smith, N4KZO
|
Re: TR-7 missing digit's on display
Well after goofing around with the voltage regulators connectors I now have display again. Do these yellow electrolytics look newer or are they original??
Not sure why the connectors didn't clean yesterday when I pulled out the board, but happy it's working. Now back to the 75A4 that someone rewired V5.?
Thanks,? Eric? K8cca?
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Re: Misc parts at NC0B's QTH
Rob
I would like to buy the 4000 AM filter.? I have an address in Fort Recovery, Ohio.
Nigel Patterson
On Tue, Jan 23, 2024 at 7:40?PM Rob Sherwood < rob@...> wrote:
All the miscellaneous items have been shipped USPS Priority, nominally arriving on Friday except for one shipment to BC, Canada.? Maybe 3 weeks for that one.
Items still looking for a new home listed below.
Rob, NC0B
?
?
Here are some filters and items available.
$75.00 plus $10.00 shipping unless otherwise? noted.
?
PayPal to rob@...???? (Not this email address)
?
Consider it house cleaning on my part.
?
Two 500 Hz Piezo Tech
One 4000 Hz Piezo Tech AM filter
One 125 Hz INRAD
1000 Hz for TR-7 Drake
500 Hz OEM? $40
2.1 kHz Fox Tango $40
?
Misc.
Two parts R-4Cs?
?
Rob, NC0B
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Re: TR-7 missing digit's on display
When you say "almost" it sounds like the displays are on and correct but DIM. If cleaning the connectors doesn't fix the issue, note that there is a 7805 regulator that only feeds the displays. It has the usual 10uf electrolytic cap on its output and probably one on its input. Might be time to break out ye old VM and check to see if you have 5 volts on the output of that regulator. I suspect those electrolytic caps may have finally given up.
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Re: Misc parts at NC0B's QTH
All the miscellaneous items have been shipped USPS Priority, nominally arriving on Friday except for one shipment to BC, Canada.? Maybe 3 weeks for that one.
Items still looking for a new home listed below.
Rob, NC0B
?
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From: [email protected] [mailto:[email protected]]
On Behalf Of Rob Sherwood
Sent: Wednesday, January 17, 2024 9:09 PM
To: [email protected]
Subject: [DRAKE-RADIO] Misc parts at NC0B's QTH
?
Here are some filters and items available.
$75.00 plus $10.00 shipping unless otherwise? noted.
?
PayPal to rob@...???? (Not this email address)
?
Consider it house cleaning on my part.
?
Two 500 Hz Piezo Tech
One 4000 Hz Piezo Tech AM filter
One 125 Hz INRAD
1000 Hz for TR-7 Drake
500 Hz OEM? $40
2.1 kHz Fox Tango $40
?
Misc.
Two parts R-4Cs?
?
Rob, NC0B
|
Re: TR-7 missing digit's on display
Check the connectors on the top of the board
From: "K8CCA" <echapm4@...> To: "DRAKE-RADIO" < [email protected]> Sent: Tuesday, January 23, 2024 3:00:50 AM Subject: [DRAKE-RADIO] TR-7 missing digit's on display
Hey guys, went to use my TR-7 last night and found that the digital display was almost completely out, all the digits except the most right where gone.? It worked fine last time I used it, perhaps in September.? I pulled the rig out of the lineup and removed the display board, thinking cleaning the pins would fix it.? Put it back in and still the same.? I guess I should have pulled all the boards?? Am I on the right path or is there some other issue? Any and all advice appreciated.
Thanks,
Eric
K8CCA
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Drake FS4 RF tune decal for R4 series receivers
When the FS4 is attached to a Drake Receiver , Drake supplied a decal to adhere to the RF tuning knob to help find the proper peak areas quickly. I am looking for a decal, copy or excellent image I can have a decal made. ?
I appreciate any help you can provide. ?
Ray. N3AQ
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TR-7 missing digit's on display
Hey guys, went to use my TR-7 last night and found that the digital display was almost completely out, all the digits except the most right where gone.? It worked fine last time I used it, perhaps in September.? I pulled the rig out of the lineup and removed the display board, thinking cleaning the pins would fix it.? Put it back in and still the same.? I guess I should have pulled all the boards?? Am I on the right path or is there some other issue? Any and all advice appreciated.
Thanks,
Eric
K8CCA
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Re: Drake W4 wattmeter woes...
Please note that #75697 and #75696 was sent some days ago, but just turned up today.
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best regards,
Glenn, OZ1HFT
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Re: Drake W4 wattmeter part three
Mike
I placed 2 each 1N295's in the mail to you this AM. I think these are the spare 2 I bought for my W4 when I was having problems.? Enjoy
73? Bob
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Jim Shorney
Warren NI5L
K8CCA
Rob Sherwood