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Date
Re: Questions of the TX-500

 

Glen,
Answer to your questions:
1. Yes you can use another mic - I use a FiFine (Internet PC Mic) and the connector accessory (Search this group)
2. DigiRig have the adaptor and interface for digi modes!
3. I believe its 4 Ohms (d/l the manual!)
4. VOX - of course!
5. Talk to HRO about Warranty etc

73
Re: Amp for Lab599, TX500

 

On Sun, Jan 22, 2023 at 10:05 PM, ve3ega wrote:
Wow! I see the qrp store is now pushing a PA500 with a battery pack and frame-a-thing for just a mere $3200 - LOL
The.package also includes the TX-500.
?
--
73, Norm/KC1BMD
Re: No Power On Transmit

 

Thank you Joshua. Yes, I know i have been out doing POTA with my 3Ah LiPo battery and had it lower than 10.0V without any issues. I too hope I find the issue. Thank you
Re: No Power On Transmit

 

I know the quick replies are stacking up here and no resolution yet. So, sorry for yet another. I typically run my LiPo for my TX500 down to 9V and have no issues with it. I hope you find the issue.

Joshua
KO4AWH
Re: Amp for Lab599, TX500

 

ve3ega, yes that price is steep! I do want that amp though (PA500).

I have been tinkering with the Micro PA50 using RF sensing. Seems this is a no-no to many and I can reason why. I will try with the cable soon, though I wonder if there is a back EMF or if properly protected. Anyways, the PA50 works well with the 705, TX500 and QDX with RF sense alone.

CU3HY on youtube should have a video out any time with his newly acquired TinySA to show how effective the BPF is on the PA50. I did a bit of checking myself as i couldn't wait. I put together a quick dirty RF sampler and here is what I see.


Joshua
KO4AWH
Re: Tuner for tx500

 

For those using the mAT-10 Automatic Tuner, is there a DC-DC charger available? I'd like to use the same battery to change it as I use to power the TX-500.


On Mon, Jan 23, 2023 at 2:57 PM f5nfb.qrp@... <f5nfb.qrp@...> wrote:
In my shack, Energy is reserved for the transceiver.

I've been using manual ATU like my TEN TEC 2544 or in portable with my
EMTECH ZM-2.

73

F5NFB - Jo
Re: Tuner for tx500

[email protected]
 

In my shack, Energy is reserved for the transceiver.

I've been using manual ATU like my TEN TEC 2544 or in portable with my EMTECH ZM-2.

73

F5NFB - Jo
Re: No Power On Transmit

 

Good eye. Let me switch to main power. Usually keep my shack running off battery and solar but we have snow today. I did run my FT-991A off of this same battery and made contacts both SSB and FT8 recently.

Will check though.

Thank you
Re: No Power On Transmit

 

¿ªÔÆÌåÓý

Have you tried using mike in ssb, AM mode or key in cw mode other than just the tone key feature?

-------- Original message --------
From: "Matt via groups.io" <mvanderhoff@...>
Date: 1/23/23 11:38 AM (GMT-05:00)
Subject: Re: [Lab599] No Power On Transmit

Sadly nothing... see pictures


--
Cecil
W4CM
Re: No Power On Transmit

 

The display says it's only receiving 10.0 VDC.? Is it possible that the voltage is so low the radio won't transmit?

- Trevor, N6TJL
Re: No Power On Transmit

 

Sadly nothing... see pictures
Re: No Power On Transmit

 

Good idea but the only problem is I had the current update on the radio when I dropped it.

Will check for split.?

And also have it to display power output and even put it up to a dummy load with an PWR/SWR meter.

Let me put this back together and check for Split. I would assume resetting it would wipe that but it might be some weird combination that it didnt.
Re: No Power On Transmit

 

After doing factory reset, did you update to latest firmware too. Perhaps a weird combination of button pressed when you dropped the mic on it caused a glitch and the update might clear it.

Check also that it's not set to split and trying to tx out of band. Also check meter setting. Is it set to display power?

On Mon, 23 Jan 2023, 15:35 Matt via , <mvanderhoff=[email protected]> wrote:
Thank you and Stephan. Good to know that is not the problem. Not to search for what is causing it to have no transmit power.

Re: No Power On Transmit

 

Thank you and Stephan. Good to know that is not the problem. Not to search for what is causing it to have no transmit power.
Re: No Power On Transmit

 

Just checked mine and as I thought, a short across the BNC is correct.
M3KXZ

On Mon, 23 Jan 2023, 15:14 Matt via , <mvanderhoff=[email protected]> wrote:

I did a factory reset on the radio to remove any doubt of a menu setting and still no power on transmit.?

From my understanding and based on my other radios there should be no short between the the ground and center pin on a transceiver. On antennas there can be but, unless I am wrong, there should not be a short on a transceiver.
Re: No Power On Transmit

 

Hi Matt,

I just measured the BNC of the radio and it has a DC short, so this might not be the problem.

73 Stephan
Re: No Power On Transmit

 

What should I check?
Re: No Power On Transmit

 

You can not check like that.

On January 23, 2023 at 10:14 AM "Matt via groups.io" <mvanderhoff@...> wrote:

I did a factory reset on the radio to remove any doubt of a menu setting and still no power on transmit.?

From my understanding and based on my other radios there should be no short between the the ground and center pin on a transceiver. On antennas there can be but, unless I am wrong, there should not be a short on a transceiver.


?


--
Cecil
W4CM
Re: No Power On Transmit

 

I did a factory reset on the radio to remove any doubt of a menu setting and still no power on transmit.?

From my understanding and based on my other radios there should be no short between the the ground and center pin on a transceiver. On antennas there can be but, unless I am wrong, there should not be a short on a transceiver.
Re: No Power On Transmit

 

Remember a DC short across centre pin and ground is not an RF short.?

You mentioned a mic was dropped on the radio; are you sure it's hasn't just pressed a button and changed a menu setting?

73 de M3KXZ

On Mon, 23 Jan 2023, 14:57 Matt via , <mvanderhoff=[email protected]> wrote:
Okay a follow up. I disassembled the TX-500 and used a multimeter. I found there is a short between the CENTER PIN and GROUND on the BNC; both inside and out. Any suggestions on where to look to resolve this?

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