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Fw: Fwd: T'was the Night...
----- Forwarded Message ----- From: Myra Giles
To: rick (bear) giles ; joyce schoby Sent: Sunday, December 1, 2013 6:01 PM Subject: Fwd: T'was the Night... This is good. Thanks to all who serve ---------- Forwarded message ---------- From: Myra Giles <zmomone@...> Date: Sun, Dec 1, 2013 at 6:00 PM Subject: Re: T'was the Night... To: Rita Rogers <rmprogers@...> Amen
On Fri, Nov 22, 2013 at 9:38 PM, Rita Rogers <rmprogers@...> wrote:
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Re: heil sound hc6 icom 7000
Check the Heil Sound website -- there's a section on using Heil's dynamic mic elements with Icom rigs: The IC-7000 has enough mic gain to handle an HC-6 cartridge, especially if you turn on the COMPressor (as Heil suggests). To get any real advantage, run the TX bandwidth as wide as you can. ? That mic element has good low-frequency response, and you should let it get through the TX passband. ?You should get nice, natural "rag-chew" quality sound from it. . ? ? ? ?Charles VA7CPC |
Re: [IC-7000] Re: running hot.
USA Icom radios generally have a one year warranty by Icom. ?Some dealers offer special promotions occasionally that provides an additional one year warranty arranged by the dealer (not Icom). ?You should read the warranty registration card and dealer invoice that came with the radio, as that is the definitive source. You might wait a few months before making any mod's to the radio, in the mod raises a warranty issue. ? There are many thousands of 7K's that have been running for many years with no cooling modifications -- mine included. But adding the mod to run the internal fan at slow speed in RX mode is the better option for most installations, in my opinion. ?External fans have to be positioned so the airflow aids (doesn't impede) the airflow through the case of the existing fan. Steve, W3AHL |
Re: [IC-7000] RE: Cold Shack - Any Concerns?
Charles Scott
All:
Representing those of us North of the Mason-Dixon line (I'm in Northern MI), I can relate my experience that I have never had a radio fail in my mobile installations due to large temperature ranges. I have seen LCD displays go wacky, but they always seem to recover nicely by the time I can take off my gloves and turn off the seat heater. This includes some number of years with my IC-7000 and IC-2820 in my current vehicle. I simply wouldn't worry about it. Chuck - N8DNX |
Re: [IC-7000] RE: Cold Shack - Any Concerns?
Perry K4PWO
Another slight risk with large thermal swings is it can aid “whisker” formation in low/no lead solder. The phenomenon is poorly understood so YMMV.
BTW, when I stated to keep “LCD’s above freezing” I was talking about an easily targeted minimum temperature, not what the spec sheet claims. That is just a point well within the operational range of LCDs and will keep you above frost formation. Frost can cause damage from water formation as warming “thaws” the frost. Keep the shack above 0 C/32 F and you have no worries. Perry – K4PWO From: ic7000@... [mailto:ic7000@...] On Behalf Of w3ahl@... Sent: Thursday, December 05, 2013 11:03 PM To: ic7000@... Subject: [IC-7000] RE: Cold Shack - Any Concerns? Toshiba (who made the LCD display module) no longer has their datasheets online, after selling the LCD product line to JDI. But similar products I've worked with spec the display for operation to -10 C (+14 F) and storage to -20 or -30 C (-4 to -22 F). The 7K's temperature spec is -10 to +60 C. (page 148 of the manual) Low temperatures will make the pixel transitions very slow and the contrast low, but the display will improve as the electronics warm it up inside. My first ARES exercise with my new 7K was in 10 degree F weather in PA. I was parking lot mobile, but all the doors were open much of the time with the engine off. I didn't have any problems with the radio, but the DC power cords were so stiff it was hard to keep the PowerPole connectors in place. Fortunately, it was a digital Winlink exercise primarily, because it was too cold to talk due to the shivering. Condensation shouldn't be a problem, unless there are rapid temperature changes (such as taking the unit inside your warm, humid house). It won't do any damage, just plug it in an let it warm up in RX mode for a while. One project I managed was developing forklift computers for large food distribution warehouses, where the forklifts went from -30 F freezers to +90 F loading docks. We never had any problems with the displays, although there was a heater behind the module to clear possible condensation and frost. Steve, W3AHL [Non-text portions of this message have been removed] |
[IC-7000] Re: running hot.
Thanks. I've found some Martin Lynch small print and I think it says all Icom product's have 2 years warranty with Icom. Anyway I'm just being over cautious. Its just that after a few hours it does have an electrical smell. I will do the fan mod as suggested.
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--- In ic7000@..., Alex Netherton <anetherton@...> wrote:
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[IC-7000] Re: running hot.
Thanks!
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--- In ic7000@..., <wb2ymu@...> wrote:
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Re: [IC-7000] Cold Shack - Any Concerns?
LCD display module can be permanently damaged by exposure to temperatures below the manufacturers minimum specified storage temperature (often -20 Cor lower). ?From a Kyocera document: "Liquid Crystal Material Effects The liquid crystal material can be permanently damaged by very low temperatures. Bubbles can form. Molecules can aggregate into solid crystals. Either of these will disrupt the carefully twisted order of liquid crystal molecules when they are transmitting light, resulting in a permanent optical defect."Steve, W3AHL |
Re: [IC-7000] Cold Shack - Any Concerns?
LCDs will not freeze. There is no liquid in an LCD.
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I have LCD TVs in my motorhome and they have been down to zero F. Also, all autos today use LCDs and they operate at any temp. -Tom, W3TLN On 5 Dec 2013 at 19:53, Perry - K4PWO wrote:
The "L" in LCD display is liquid. They can freeze which can damage the display. Keep the shack above freezing and you should be OK. |
Re: [IC-7000] Re: running hot.
The only time I have had mine run hot is when I run PSK and forget to turn the RF power down to about 5 watts. John V. Nelson?–?KD8TZC From: "alex.c.lawler@..." <alex.c.lawler@...> Reply-To: IC 7000 <ic7000@...> Date: Tuesday, December 3, 2013 at 5:56 PM To: IC 7000 <ic7000@...> Subject: [IC-7000] Re: running hot. ?
Please ignore. I have trouble shooted and eventually resolved the issue. I have however noticed the Icom runs hot with a burning smell after a couple of hours of use. Do any of you use external fans. Also when buying new should anything go wrong do Icom have a warranty scheme. I'm guessing by law they have to. I know the shop I purchased from only offer 28 days. |
Re: [IC-7000] RE: Cold Shack - Any Concerns?
BT Yahoo!?2013
Hi Steve ???????????? Having had the issue with power poles myself. i found that they do some shrounds which have locking tabs on so i built a box with six power poles in side which gives me three power pole pairs so i get two extra connections for other devices . ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Best regards Robert G6LLP From: "w3ahl@..." To: ic7000@... Sent: Friday, 6 December 2013, 5:03 Subject: [IC-7000] RE: Cold Shack - Any Concerns?
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Toshiba (who made the LCD display module) no longer has their datasheets online, after selling the LCD product line to JDI. ?But similar products I've worked with spec the display for operation to -10 C (+14 F) and storage to -20 or -30 C (-4 to -22 F). ?The 7K's temperature spec is -10 to +60 C. (page 148 of the manual) Low temperatures will make the pixel transitions very slow and the contrast low, but the display will improve as the electronics warm it up inside. My first
ARES exercise with my new 7K was
in 10 degree F weather in PA. ?I was parking lot mobile, but all the doors were open much of the time with the engine off. ?I didn't have any problems with the radio, but the DC power cords were so stiff it was hard to keep the PowerPole connectors in place. ?Fortunately, it was a digital Winlink exercise primarily, because it was too cold to talk due to the shivering. Condensation shouldn't be a problem, unless there are rapid temperature changes (such as taking the unit inside your warm, humid house). ?It won't do any damage, just plug it in an let it warm up in RX mode for a while. One project I managed was developing forklift computers for large food distribution warehouses, where the forklifts went from -30 F freezers to +90 F loading docks. ?We never had any problems with the displays, although there was a heater behind the module to clear possible condensation and frost. Steve, W3AHL
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Re: Cold Shack - Any Concerns?
Toshiba (who made the LCD display module) no longer has their datasheets online, after selling the LCD product line to JDI. ?But similar products I've worked with spec the display for operation to -10 C (+14 F) and storage to -20 or -30 C (-4 to -22 F). ?The 7K's temperature spec is -10 to +60 C. (page 148 of the manual) Low temperatures will make the pixel transitions very slow and the contrast low, but the display will improve as the electronics warm it up inside. My first ARES exercise with my new 7K was in 10 degree F weather in PA. ?I was parking lot mobile, but all the doors were open much of the time with the engine off. ?I didn't have any problems with the radio, but the DC power cords were so stiff it was hard to keep the PowerPole connectors in place. ?Fortunately, it was a digital Winlink exercise primarily, because it was too cold to talk due to the shivering. Condensation shouldn't be a problem, unless there are rapid temperature changes (such as taking the unit inside your warm, humid house). ?It won't do any damage, just plug it in an let it warm up in RX mode for a while. One project I managed was developing forklift computers for large food distribution warehouses, where the forklifts went from -30 F freezers to +90 F loading docks. ?We never had any problems with the displays, although there was a heater behind the module to clear possible condensation and frost. Steve, W3AHL |
Re: [IC-7000] Cold Shack - Any Concerns?
On Thu, 5 Dec 2013 09:43:14 -0600, Rusty Zimmerman wrote:
My shack is in a 10x16 Shed that is outside of my house. It is insulatedFrequency drift will be a bit of a problem, even though the rig has a built-in TCXO. How much of a problem will depend on what bands you operate and what you expect. The higher you go, the more error and faster the drift will be. If you insist on being isolated (why?), leave the rig on 24/7. That will help considerably, but it will still vary from warmer to cooler days. If 24/7 isn't desirable, you could remote a switch that would allow you to turn the rig on an hour or two before you want to operate and minimize how much you have to put up with at the time you want to use it. Someone mentioned the LCD display. I've had no damage to a display in several VHF/UHF rigs over the years at sub-zero temps (mobiles that sit out all year). The display is extremely slow to react and will be hard to read when it is really cold, but it will work. Just like anything else when it is cold, treat it as something fragile. Even steel will snap like a branch under certain extreme cold and physical shocking. :o) Most of this is not exclusive to the 7000, but any rig. I know of nothing that will cause a problem just because it is a 7000. It will get pretty warm in the summer, but that same heat will help it stay warm in the winter, and you can turn it off when not in use in the summer. Gary -- Web: NodeOp Page: Node 3055: |
Re: [IC-7000] Cold Shack - Any Concerns?
>>>> They can freeze which can damage the display <<<< Never had any problem with mine in my truck since 2009 ln Chicago during winter months. Even after being parked for 10 to 15 days. BTW. - Ever heard any one complain of their Car Stereo LCD being damage due to freeezing? ((((73 )))) Milverton. On Thursday, December 5, 2013 7:53 PM, Perry - K4PWO
wrote:
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