开云体育

Hf tx

James Weston All Messages By This Member #42927 I've owned my 7000 since new. Recently upon attempting to TX on hf the radio re-starts. Any ideas before I send it off? Tried different antennas same result. Haven't tried vhf or uhf.
Pasquale S All Messages By This Member #42928 开云体育 Check the absorption of the power supply, check the contacts of the cable with the power supply and with the radio and finally check the fuses along the cable itself, they must have a solid electrical contact 73s, Pasquale IW0HEX Il 01/02/2025 19:42, James Weston via groups.io ha scritto: toggle quoted message Show quoted text I've owned my 7000 since new. Recently upon attempting to TX on hf the radio re-starts. Any ideas before I send it off? Tried different antennas same result. Haven't tried vhf or uhf.
James F. Boehner, MD All Messages By This Member #42929 开云体育 James, ? Before you do anything, make sure the power supply can handle the transmit current of the rig.? If it did it before, it’s probably fine. ? And definitely, take out the blade fuses from the DC wires to the radio and reinsert in their sockets.? Repeat x 2.? Corrosion is a major problem on those contacts resulting in increased resistance and voltage drop causing the radio to reboot when transmitting is attempted. ? ‘73 de Jim N2ZZ ? toggle quoted message Show quoted text From: [email protected] <[email protected]> On Behalf Of James Weston via groups.io Sent: Saturday, February 1, 2025 1:42 PM To: [email protected] Subject: [ic7000] Hf tx ? I've owned my 7000 since new. Recently upon attempting to TX on hf the radio re-starts. Any ideas before I send it off? Tried different antennas same result. Haven't tried vhf or uhf.
James Weston All Messages By This Member #42930 开云体育 Ok I will do that. Thanks Get toggle quoted message Show quoted text From: [email protected] <[email protected]> on behalf of James F. Boehner, MD via groups.io <jboehner01@...> Sent: Saturday, February 1, 2025 3:47:49 PM To: [email protected] <[email protected]> Subject: Re: [ic7000] Hf tx ? James, ? Before you do anything, make sure the power supply can handle the transmit current of the rig.? If it did it before, it’s probably fine. ? And definitely, take out the blade fuses from the DC wires to the radio and reinsert in their sockets.? Repeat x 2.? Corrosion is a major problem on those contacts resulting in increased resistance and voltage drop causing the radio to reboot when transmitting is attempted. ? ‘73 de Jim N2ZZ ? From: [email protected] <[email protected]> On Behalf Of James Weston via groups.io Sent: Saturday, February 1, 2025 1:42 PM To: [email protected] Subject: [ic7000] Hf tx ? I've owned my 7000 since new. Recently upon attempting to TX on hf the radio re-starts. Any ideas before I send it off? Tried different antennas same result. Haven't tried vhf or uhf.
James Weston All Messages By This Member #42931 开云体育 Ok thanks to Jim as well Get toggle quoted message Show quoted text From: James Weston <jweston98@...> Sent: Saturday, February 1, 2025 3:49:37 PM To: [email protected] <[email protected]> Subject: Re: [ic7000] Hf tx ? Ok I will do that. Thanks Get From: [email protected] <[email protected]> on behalf of James F. Boehner, MD via groups.io <jboehner01@...> Sent: Saturday, February 1, 2025 3:47:49 PM To: [email protected] <[email protected]> Subject: Re: [ic7000] Hf tx ? James, ? Before you do anything, make sure the power supply can handle the transmit current of the rig.? If it did it before, it’s probably fine. ? And definitely, take out the blade fuses from the DC wires to the radio and reinsert in their sockets.? Repeat x 2.? Corrosion is a major problem on those contacts resulting in increased resistance and voltage drop causing the radio to reboot when transmitting is attempted. ? ‘73 de Jim N2ZZ ? From: [email protected] <[email protected]> On Behalf Of James Weston via groups.io Sent: Saturday, February 1, 2025 1:42 PM To: [email protected] Subject: [ic7000] Hf tx ? I've owned my 7000 since new. Recently upon attempting to TX on hf the radio re-starts. Any ideas before I send it off? Tried different antennas same result. Haven't tried vhf or uhf.
Colin Lowne All Messages By This Member #42932 check the fuse holder connections.. vk3zzs geelong toggle quoted message Show quoted text On Sun, Feb 2, 2025 at 7:36?AM James Weston via <jweston98=[email protected]> wrote: I've owned my 7000 since new. Recently upon attempting to TX on hf the radio re-starts. Any ideas before I send it off? Tried different antennas same result. Haven't tried vhf or uhf.
Bob All Messages By This Member #42933 Try into dummy load. Try lower power. Bob W4JFA? toggle quoted message Show quoted text On Sat, Feb 1, 2025, 7:19 PM Colin Lowne via <lownecolin=[email protected]> wrote: check the fuse holder connections.. vk3zzs geelong On Sun, Feb 2, 2025 at 7:36?AM James Weston via <jweston98=[email protected]> wrote: I've owned my 7000 since new. Recently upon attempting to TX on hf the radio re-starts. Any ideas before I send it off? Tried different antennas same result. Haven't tried vhf or uhf.
Mike All Messages By This Member #42934 The IC-7000 is VERY voltage sensitive.? I had the exact same problem.? The very nice and competent gentleman at the St. Joseph Icom Service Center set me straight.? The 7000 needs 13.6v.? Use a power supply that delivers 13.6 in TX. toggle quoted message Show quoted text On Mon, Feb 3, 2025 at 4:41 AM, Bob via groups.io <W4JFABob@...> wrote: Try into dummy load. Try lower power. Bob W4JFA? On Sat, Feb 1, 2025, 7:19 PM Colin Lowne via <lownecolin=[email protected]> wrote: check the fuse holder connections.. vk3zzs geelong On Sun, Feb 2, 2025 at 7:36?AM James Weston via <jweston98=[email protected]> wrote: I've owned my 7000 since new. Recently upon attempting to TX on hf the radio re-starts. Any ideas before I send it off? Tried different antennas same result. Haven't tried vhf or uhf.
Andrew Lenton All Messages By This Member #42935 开云体育 Hi Most Icom radios will not operate on low voltage, i.e. 12.5V lead acid, always feed with 13.8V min. ? Yaesu and Elecraft will go down a bit. ? KR ? Andrew ? toggle quoted message Show quoted text From: [email protected] <[email protected]> On Behalf Of Mike via groups.io Sent: 03 February 2025 15:31 To: [email protected] Subject: Re: [ic7000] Hf tx ? The IC-7000 is VERY voltage sensitive.? I had the exact same problem.? The very nice and competent gentleman at the St. Joseph Icom Service Center set me straight.? The 7000 needs 13.6v.? Use a power supply that delivers 13.6 in TX. ? On Mon, Feb 3, 2025 at 4:41 AM, Bob via groups.io <W4JFABob@...> wrote: Try into dummy load. Try lower power. Bob W4JFA? ? On Sat, Feb 1, 2025, 7:19 PM Colin Lowne via <lownecolin=[email protected]> wrote: check the fuse holder connections.. ? vk3zzs geelong ? On Sun, Feb 2, 2025 at 7:36?AM James Weston via <jweston98=[email protected]> wrote: I've owned my 7000 since new. Recently upon attempting to TX on hf the radio re-starts. Any ideas before I send it off? Tried different antennas same result. Haven't tried vhf or uhf.
James Weston All Messages By This Member #42936 I checked power supply connections. Good. I came across 2 patch cords that had gone south. One was new a year ago. The radio is working as it should. Thank you to all who replied. Now to play on hf. De ve3rng cq!
ajparent1/kb1gmx All Messages By This Member #42937 Icom 7000 and 7300 as I have both work down to 12V reliably. They get fussy at? around 11.8V.? ?That however is measured at the rear panel connector.? Long wires and fuse issues even at 13.8 can easily mean your low at the connector. ? Note, I take the stock cable and cut it close to the radio and put 30A power poles on that stub and the wires to battery are #10 with high speed circuit breakers identical to the one tentec used.? So voltage loss to wire and connections are minimized.? When time permits the 7000 will get a rear panel replacement for the Icom connector to PowerPole.? ? The spec is 13.8 +-15% means 11.73V when at the minus side? and it means at the connector, not at the beginning of 6ft+ of cable. ? But most lead acid without boost converter (or engine running in a car/truck) can easily sag below acceptable voltage level. ? FYI I use solar/battery to run my station.? Thats 400W of solar and 150AH of battery (floodded industrial NiCds) so the DC bus is nominally 13.5V or slightly higher normally.? Even after a contest weekend in january I've never seen the battery below 12.9V (with 10 inches of snow on the panels).? Never had issues.? Under those conditions due to very direct connections, heavy wire( #10), and mechanically secure fuses so the back of the radio voltage is more doesn't drop far.? In my system .4V drop is cause for alarm!?? ? For my FD battery a 100Ah LFE voltage like the NiCd mentioned is not an issue until the battery is drained to 80% depth of discharge, takes a lot of hours to get to that point.? ? When I ran lead acid batteries it was a issue as terminal voltage for a charged battery was about? 13.1-13.2 and could be as low as 12.7V which is close to safe low limit.? At full power (21A measured) the 100Ah lead acid battery would sag to under 12V.? Battery voltage booster was a must to use at least 60% capacity. ? -- Allison

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