OT: Protecting Toroidal Cores
Locked
 
|
Is it necessary to protect toroidal cores from the weather? They will be
outside in a coastal environment. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
It depends...
Some mixes will absorb water then crack when frozen You can test one of your toroids by soaking it in water for a day then freezing it 73 Frank W3LPL ----- Original Message ----- From: [hidden email] To: [hidden email] Sent: Wednesday, May 2, 2018 4:00:16 AM Subject: [Elecraft] OT: Protecting Toroidal Cores Is it necessary to protect toroidal cores from the weather? They will be outside in a coastal environment. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: OT: Protecting Toroidal Cores
|
|
In reply to this post by marvwheeler
There is no need to add additional protection for the K2 toroids. The
enamel on the wire provides all the protection that is needed. Do NOT add any compound to the toroids. It may cause changes in the inductance and render your K2 non-functional. Besides, it will void the warranty. 73, Don W3FPR On 5/2/2018 12:00 AM, [hidden email] wrote: > Is it necessary to protect toroidal cores from the weather? They will be > outside in a coastal environment. > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: OT: Protecting Toroidal Cores
|
|
In reply to this post by donovanf
On 5/1/2018 9:30 PM, [hidden email] wrote:
> Some mixes will absorb water then crack when frozen > Hi Frank, Have you kept track of which mixes have that characteristic? 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
I have not, but its easy to test!
----- Original Message ----- From: "Jim Brown" <[hidden email]> To: [hidden email] Sent: Wednesday, May 2, 2018 4:44:44 AM Subject: Re: [Elecraft] OT: Protecting Toroidal Cores On 5/1/2018 9:30 PM, [hidden email] wrote: > Some mixes will absorb water then crack when frozen > Hi Frank, Have you kept track of which mixes have that characteristic? 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: OT: Protecting Toroidal Cores
|
|
Yeas, but it's a destructive test, like checking the opening current for a
fuse. I would guess that any core, whether ferrite or powdered iron would be subject to some water absorbs ion in not coated/painted. 73, Charlie k3ICH -----Original Message----- From: [hidden email] <[hidden email]> On Behalf Of [hidden email] Sent: Wednesday, May 02, 2018 12:56 AM To: [hidden email] Cc: [hidden email] Subject: Re: [Elecraft] OT: Protecting Toroidal Cores I have not, but its easy to test! ----- Original Message ----- From: "Jim Brown" <[hidden email]> To: [hidden email] Sent: Wednesday, May 2, 2018 4:44:44 AM Subject: Re: [Elecraft] OT: Protecting Toroidal Cores On 5/1/2018 9:30 PM, [hidden email] wrote: > Some mixes will absorb water then crack when frozen > Hi Frank, Have you kept track of which mixes have that characteristic? 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: OT: Protecting Toroidal Cores
|
|
Would a simple dip in varnish do?
David G3UNA > On 02 May 2018 at 12:35 Charlie T <[hidden email]> wrote: > > > Yeas, but it's a destructive test, like checking the opening current for a > fuse. > I would guess that any core, whether ferrite or powdered iron would be > subject to some water absorbs ion in not coated/painted. > > 73, Charlie k3ICH > > > > > -----Original Message----- > From: [hidden email] <[hidden email]> On > Behalf Of [hidden email] > Sent: Wednesday, May 02, 2018 12:56 AM > To: [hidden email] > Cc: [hidden email] > Subject: Re: [Elecraft] OT: Protecting Toroidal Cores > > I have not, but its easy to test! > > ----- Original Message ----- > > From: "Jim Brown" <[hidden email]> > To: [hidden email] > Sent: Wednesday, May 2, 2018 4:44:44 AM > Subject: Re: [Elecraft] OT: Protecting Toroidal Cores > > On 5/1/2018 9:30 PM, [hidden email] wrote: > > Some mixes will absorb water then crack when frozen > > > Hi Frank, > > Have you kept track of which mixes have that characteristic? > > 73, Jim K9YC > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net Please help support this email list: > http://www.qsl.net/donate.html Message delivered to [hidden email] > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Message > delivered to [hidden email] > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
In reply to this post by Charlie T, K3ICH
I have had several FT-240 #31 cores crack with big chunks out of them or
break in pieces. They were just lying on the ground with several turns of RG6 through them. They were in rain, snow and ice for a winter here in upstate NY. These were for receiving. I will be building new chokes and put them in a 4 x 4 plastic sealed box. 73, N2TK, Tony -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of Charlie T Sent: Wednesday, May 02, 2018 7:36 AM To: [hidden email] Subject: Re: [Elecraft] OT: Protecting Toroidal Cores Yeas, but it's a destructive test, like checking the opening current for a fuse. I would guess that any core, whether ferrite or powdered iron would be subject to some water absorbs ion in not coated/painted. 73, Charlie k3ICH -----Original Message----- From: [hidden email] <[hidden email]> On Behalf Of [hidden email] Sent: Wednesday, May 02, 2018 12:56 AM To: [hidden email] Cc: [hidden email] Subject: Re: [Elecraft] OT: Protecting Toroidal Cores I have not, but its easy to test! ----- Original Message ----- From: "Jim Brown" <[hidden email]> To: [hidden email] Sent: Wednesday, May 2, 2018 4:44:44 AM Subject: Re: [Elecraft] OT: Protecting Toroidal Cores On 5/1/2018 9:30 PM, [hidden email] wrote: > Some mixes will absorb water then crack when frozen > Hi Frank, Have you kept track of which mixes have that characteristic? 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
Any choke I construct is in a box, with a 1/64th inch vent hole to keep
from building a water pump out of my coax. 73s and thanks, Dave NK7Z https://www.nk7z.net On 05/02/2018 08:12 AM, N2TK, Tony wrote: > I have had several FT-240 #31 cores crack with big chunks out of them or > break in pieces. They were just lying on the ground with several turns of > RG6 through them. They were in rain, snow and ice for a winter here in > upstate NY. These were for receiving. I will be building new chokes and put > them in a 4 x 4 plastic sealed box. > 73, > N2TK, Tony > > -----Original Message----- > From: [hidden email] > [mailto:[hidden email]] On Behalf Of Charlie T > Sent: Wednesday, May 02, 2018 7:36 AM > To: [hidden email] > Subject: Re: [Elecraft] OT: Protecting Toroidal Cores > > Yeas, but it's a destructive test, like checking the opening current for a > fuse. > I would guess that any core, whether ferrite or powdered iron would be > subject to some water absorbs ion in not coated/painted. > > 73, Charlie k3ICH > > > > > -----Original Message----- > From: [hidden email] <[hidden email]> On > Behalf Of [hidden email] > Sent: Wednesday, May 02, 2018 12:56 AM > To: [hidden email] > Cc: [hidden email] > Subject: Re: [Elecraft] OT: Protecting Toroidal Cores > > I have not, but its easy to test! > > ----- Original Message ----- > > From: "Jim Brown" <[hidden email]> > To: [hidden email] > Sent: Wednesday, May 2, 2018 4:44:44 AM > Subject: Re: [Elecraft] OT: Protecting Toroidal Cores > > On 5/1/2018 9:30 PM, [hidden email] wrote: >> Some mixes will absorb water then crack when frozen >> > Hi Frank, > > Have you kept track of which mixes have that characteristic? > > 73, Jim K9YC > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net Please help support this email list: > http://www.qsl.net/donate.html Message delivered to [hidden email] > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Message > delivered to [hidden email] > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Message > delivered to [hidden email] > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
«
Return to Elecraft
|
1 view|%1 views
| Free forum by Nabble | Edit this page |