Daiwa PEP Meters

[Mudfoot]

I've owned 2-3 of the Daiwa 901HP meters. Lately, I've read some hate comments about them. I watched a TRXBench video last night. He modulated a two tone pulse thru it. The single tone read like it should between RMS and peak. They maintained the same reading as it should. When fed the 2 tone, the reading decreased.

He was checking it against an LP200A, which of course, read correctly. I don't have the ability to replicate. Wondering if someone can test their Daiwa.

Just curious.

 

[Low_Boy]

My first meter was junk. Way off calibration. It went back. Second meter is close to the LP100a. The bird meter shows more power than the LP. And daiwa. The LP is a odd meter sometimes shows more than the bird. But usually shows less power.

 

[CB590]

Was looking at Daiwa 901HP3 meter to use on the base setup and replace my non-peak MFJ-822 (which only shows me swing on sideband mode which may or may not be accurate).

Doe the 901HP show AM dk and PEP?? Never seen anyone do an AM pep test with it.

 

[2NC995]

When fed the 2 tone, the reading decreased. He was checking it against an LP200A, which of course, read correctly.

How big was the difference, just for curiosity sake?

I think mine may be a tad generous but it fits my needs perfectly.

 

[Mudfoot]

Starts ar 35:58 minutes into video.

 

[2NC995]

Hmm. I don’t think that meter he is testing is anything like the 901. The 901 has a powered PEP measuring circuit.

 

[Mudfoot]

It's not, which is why I want to see if it behaves the same way.

 

[M0GVZ]

Doe the 901HP show AM dk and PEP?? Never seen anyone do an AM pep test with it.

I've used it on SSB and it does do PEP and it measures it properly. I will say though, and they do say in the manual, that the meter accuracy does alter over the scale, it's not entirely linear, and it's only really accurate at full scale deflection. It could be why some are finding it reading different than other meters mid-scale.

 

[Low_Boy]

Was looking at Daiwa 901HP3 meter to use on the base setup and replace my non-peak MFJ-822 (which only shows me swing on sideband mode which may or may not be accurate).

Doe the 901HP show AM dk and PEP?? Never seen anyone do an AM pep test with it.

Yes but read the manual it says minimum wattage is 4 or 5 watts.

 

[CB590]

Yes but read the manual it says minimum wattage is 4 or 5 watts.

got that. My dual rig goes 3-9w dk. Just wanted to see the "shwing". LoL

 

[snippits75]

I've owned 2-3 of the Daiwa 901HP meters. Lately, I've read some hate comments about them.

Just got a Daiwa 901 HP delivered today that I bought from HRO. It was defective right out of the box. Power needle was buried, and no amount of adjustment on the front of the meter would even bring it close to zero. The SWR/reflect needle was spot on.

Anyway, Ham Radio Outlet is sending me a new one plus paying for the ride back for the defective Daiwa. Wish I would have kept my 501 now!

 

[CB590]

Sorry to hear that. It does happen. My original MFJ meter had issues. They did same for me. You'll like the 901 once you get it right.