From these few comments, you may reasonably conclude I am a dumb fuck and the only reason I continue to work is people feeling sorry for me. I'm perfectly fine with that!
Oh bugger. In an unfortunate night of crazed temperature and maddening sweats I appear to have ordered some AD8307’s from China again.
Hold my beer. Joining the party.
(Eventually - moving house)
The following comment was pulled from the attached video.QuoteBird didn't make their own meters, Before Bird moved production to china they used Simpson meters.. Ever since Bird, moved production to china their quality has gone down the crapper, The slugs are now brass plated plastic. Coaxial dynamics is really become a better product but they are still over priced.
I'm curious as to why CB'rs have such a Bird fetish, I mean they aren't all that accurate. Bird laughingly claims +- 5 percent of full scale but the calibration lab I use has told me in the 40 years they've been in business that the overwhelming majority of bird slugs they've tested barely met +- 10 percent and they are a military contractor
I wonder what this brass plated plastic looks like.
Also, an article on how to modify your Bird slugs:
https://www.hayseed.net/~jpk5lad/BIRD%20Slugs/birdslug4.htm
From these few comments, you may reasonably conclude I am a dumb fuck and the only reason I continue to work is people feeling sorry for me. I'm perfectly fine with that!
Now that you've admitted that I'll say it - I feel really sorry for you.
Oh bugger. In an unfortunate night of crazed temperature and maddening sweats I appear to have ordered some AD8307’s from China again.
Hold my beer. Joining the party.
(Eventually - moving house)
Now if this poor guy reads this post, they are going to suggest there is no way using a PC will ever be fast enough!!
SPECIFICATIONS AND LEADING PARTICULARS
The Model 81041 Directional USB Wattmeter is an accurate and portable insertion RF
Wattmeter using plug-in power detectors and QUICK MATCH RF connectors, which measures
forward and reflected CW power. The Model 81041 features a large scale, easily read meter
movement in conjunction with a USB interface. Standard Ranges: 100 mW to 10 kW; 0.45-2300
MHz. Accuracy: +/- 5% of full scale
http://www.coaxial.com/manuals/81041.pdf
I searched to see if I could find anything to backup that statement about plastic slugs. I had no luck.
From these few comments, you may reasonably conclude I am a dumb fuck and the only reason I continue to work is people feeling sorry for me. I'm perfectly fine with that!
Now if this poor guy reads this post, they are going to suggest there is no way using a PC will ever be fast enough!!
LOL my meter updates faster that that thing and it's running on an Arduino platform and taking three samples per point.
Piping it to a PC shouldn't slow it down. I'd be interested in what internal system they put in the Coaxial Dynamics to take the samples. Just by looking at the video (but never using one), the presentation on the PC monitor seems a little clunky overall. I'd have put +/- 5% full scale error needles to follow the main needle, so these people would keep it in their head what they are looking at carries error with it. Naw, I guess that would ruin their feel-good outlook about the readings.
But uh, I guess he should've RTFM before he bought the thing if he wanted to observe SSB meter swings -
QuoteSPECIFICATIONS AND LEADING PARTICULARS
The Model 81041 Directional USB Wattmeter is an accurate and portable insertion RF
Wattmeter using plug-in power detectors and QUICK MATCH RF connectors, which measures
forward and reflected CW power. The Model 81041 features a large scale, easily read meter
movement in conjunction with a USB interface. Standard Ranges: 100 mW to 10 kW; 0.45-2300
MHz. Accuracy: +/- 5% of full scale
http://www.coaxial.com/manuals/81041.pdf
Since I'm making a post I will include a power meter cosmetic update. I received the button covers I wanted and they look a lot better. They are rubber too and feel nice. I want my power meter to have that feel of quality!
I'm taking data and making some graphs, should have something to show "soon".
From these few comments, you may reasonably conclude I am a dumb fuck and the only reason I continue to work is people feeling sorry for me. I'm perfectly fine with that!
On the contrary, Joe, you are a very clever guy,---- it is just your Jihad against hams & Bird meters that is annoying.
I can't see the ham radio use case for continuous inline connection of such a meter as shown in the video.
...using analog circuits they somewhat ambitiously styled as "computers".
Quick poke. I hold more respect for the CBers than the 80m lot
As for tech in the usual hams, I remember a comment I had at the local club:
“Aitch Pee? Don’t they make printers?”
Here's a couple of pics of the testing. Transmitting on the 5W setting of the transceiver 146.520 MHz (FM of course). Using external 50 dB atten.
hp 437B vs. AD8310 project meter. How well do they agree?
hp 437B measures 3.97 W
Project meter measures 4.0 W
Here's a couple of pics of the testing. Transmitting on the 5W setting of the transceiver 146.520 MHz (FM of course). Using external 50 dB atten.
hp 437B vs. AD8310 project meter. How well do they agree?
hp 437B measures 3.97 W
Project meter measures 4.0 W
So your meter is pretty good, but your radio's output power is 20% low at best?
Show us measurements of a signal with high crest-factor, i.e speech or music.
No, i am asking to compare the project meter against watever industrial RF power meter you have on hand, including the Bird one. Any idiot can use a spectrum analyzer.
Well, CW measurement is a very limited use case, isn't it.
hp 437B measures 3.97 W
Project meter measures 4.0 W
Show us measurements of a signal with high crest-factor, i.e speech or music.
... i am asking to compare the project meter against watever industrial RF power meter you have on hand, including the Bird one.