RF Power Levels

[Drew Rankin]

Min,

I've been checking around, but I can not find the information.

Do you know what the output RF levels are on VHF and UHF for Low, Medium, and High power?

Right now, I am talking to a repeater about 76km/47mi on medium power VHF. I can open it on low power as well, but the signal reports say that I'm just above the squelch level of the repeater.

Thanks,

Drew

[Min G0JMS]

Hi Drew

I think you must have a good location and a nice antenna setup to het that distance on the low power setting.

I've done a spreadsheet using my setup and meters using an old dummy load. There are no published figures for the radio for the mid and low settings only the design max. 

Hope this data helps you understand the radio TX power.

 

This was the TX test on 2M at full power (145.075) on the Retevis radio which is the same and you can see its drawing 7 Amps.

Min G0JMS

[Jason Jaurigue]

Nice setup. Thanks for the test results.

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[Drew Rankin]

Thanks, Min!

I am in a very quiet location here in the middle of the US. I have a UHF repeater at about half that distance, that I can open up with a Baofeng BF-888S HT.

I just completed my HF station grounding project today and the noise floor dropped from S5 to S1-2. Although, now that it's after dark, the QRN on 80m is around S7. 40m is still pretty good.

73

Drew

KD2USM

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[Marnoch Standen]

Good luck with killing QRM equipment can be a pain to track down.

I wiped out all of HF and found it was a cheap battery charger from china that was making the noise +9 on all bands.  

Min Standen G0JMS

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[Angelo T Sonnesso]

Bob from Palomar engineers has a video on YouTube called The ABCs of RFI.

He discusses RF I  and noise in the shack.

He tells you how to test , and remove the noise.

Hope this helps.

 

73 N2DYN Angelo

 

From: 'Marnoch Standen' via Vero VR N7500 Dual Radio Band <Vero...@googlegroups.com>
Sent: Sunday, August 7, 2022 2:40 AM
To: Vero...@googlegroups.com
Subject: Re: [Veron VR-N7500 Google Group] Re: RF Power Levels

 

Good luck with killing QRM equipment can be a pain to track down.

I wiped out all of HF and found it was a cheap battery charger from china that was making the noise +9 on all bands.  

Min Standen G0JMS

On 7 Aug 2022 03:41, Drew Rankin <andrew.j...@gmail.com> wrote:

Thanks, Min!

 

I am in a very quiet location here in the middle of the US. I have a UHF repeater at about half that distance, that I can open up with a Baofeng BF-888S HT.

 

I just completed my HF station grounding project today and the noise floor dropped from S5 to S1-2. Although, now that it's after dark, the QRN on 80m is around S7. 40m is still pretty good.

 

73

 

Drew

KD2USM

 

 

 

On Fri, Aug 5, 2022 at 5:10 AM Min G0JMS <marnoch...@gmail.com> wrote:

Hi Drew

 

I think you must have a good location and a nice antenna setup to het that distance on the low power setting.

I've done a spreadsheet using my setup and meters using an old dummy load. There are no published figures for the radio for the mid and low settings only the design max. 

Hope this data helps you understand the radio TX power.

 

 

 

This was the TX test on 2M at full power (145.075) on the Retevis radio which is the same and you can see its drawing 7 Amps.

 

To view this discussion on the web, visit https://groups.google.com/d/msgid/Veron7500/f46f8ef3-add2-4f23-ac44-e18d726432b1%40email.android.com.