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Hi Alan, Here is a link to the ARRL IC7300 review article that I found on the internet.? It was in the August 2016 issue on Page 41.

Thank you Alan. [email protected]> wrote:

Hey Bob, I downloaded and attached the 7300 "RF Tail" document... (See attached PDF). -- 73, ~Alan

Dave, That link takes me to the 7300 group IO home page but cannot find the RF tail fix. I do not own a 7300 but have a few friends that do which each of them seem to get things confused so I end up

On Thu, Aug 1, 2024 at 07:25 PM, Alan - W5ARM wrote: > > Howdy Bob, > > Your second picture provided a better view... I think I figured it out. > > The "big" 2-pole relay appears to have a

Hi. [email protected]> wrote:

Test Reply with pic pasted in... -- 73, ~Alan

Test Dino - KX6D ________________________________ Sent: Friday, August 2, 2024 2:11:50 PM To: [email protected] <[email protected]> Subject: [ham-amplifiers] Test Message... Please reply

Please reply to this message and include an attachment. I don't want to have a discussion here or for this thread to get out of control so please just say hi, attach a picture, and that's it.

Icom IC-7300 Hot- switch Mitigation The Issue The Icom IC-7300 was released with a flaw in its external amplifier keying circuit apparently caused by an incorrect timing parameter programmed into the

It is... In : MENU --> SET --> FUNCTION --> TX DELAY HF -- 73, ~Alan

Guys, I ordered that board from Tom. Thank you for all the help etc. As far as the 7300 goes, I thought all that was adjustable in the menu??? Bob W4JFA [email protected]> wrote:

Thanks Bill...but this is the same info you sent me some weeks ago. My question is: did you intend to attach a different 3rd file, rather than the bias schematic twice? Look at the attachments you

The

Robin, Here is a problem that may be similar to yours: https://www.eham.net/forum/view?id=topic,112624.0.html I had the shorted Q2 problem as well in my Centurion. 73 Bill N4LG PS: Another problem is

Many amplifiers have a watch dog circuit that avoids the amp relays from being hot switched. Many amps will delay the closing of the relays until the PTT signal is present and no RF is at the input.

I find that really hard to believe. That means that using a 7300 with ANY amplifier - even a modern tube or solid state amp - would allow the 7300 to hot-key (or hot "un-key") the amp? This would mean

Sequencing is required for some rigs. The classic example is the ICOM 7300 which releases the amplifier key line before the RF goes to zero.? See QST review for IC7300.? In this case, sequencing is

I agree. You never had any kind of sequencing with the old relay. The new vacuum relays will be so much faster that you probably won't need to bother with all that. 73, Alek VK6APK.

Howdy Bob, Your second picture provided a better view... I think I figured it out. The "big" 2-pole relay appears to have a micro-switch - or some sort of auxiliary contact -? attached to it (see