Any one out there using a Bird 43 for measuring out put power for QRP? I have a 250H element for HF. Should I get the 50H element for HF? I have a Ten-Tec Omni VI Plus Power turned down to minimum.
Bird make HF (H) elements at 5, 10, 25, 50, 100, 250, 500, 1000, 2500, 5000 and 10000 Watts. Finding the 5, 10, or 25 Watt elements new may be a trick as they are only produced infrequently. Several
Adding to Joe's suggestion, NM3E and Chuck Martin RF Supply are good sources for used Bird and Coaxial Dynamics product. I've been pleased with both suppliers. http://www.nm3e.com/ http://www.chuckma
Hi Jim Many years ago at 4U1ITU I found the Bird 43 grossly underestimated the power output on 160, rather embarrassing at the temple of regulation. Bob VE7BS ________________________________________
Bob, If you had a 250H that read grossly underestimated, then you had a bad element, the line section or the meter. The usable range in NOT a square-wave. Price W0RI Hi Jim Many years ago at 4U1I
Try Webster Communications in Rochester, Michigan. This is the old Webster Band Spanner mobile antennas. He's still around, I saw him at Dayton this year. He sells Bird elements. Also, don't forget C
Simply going to the Bird site would have given you a glimpse at one of their manuals that has the correction factors needed. Carl KM1H _______________________________________________ UR RST IS ... ..
If that was the case, they had a bad slug. The rating of the Bird 43 and standard slug is + or - 5% of full scale anywhere on the scale within the range of the slug, but it does not go far out of to
Or if you don't want to concern yourself with different slugs for different frequencies and power levels (other than UHF)...sell your Bird wattmeter and all the slugs and get a LP-100A which has NIST
Thank you everybody for interesting and useful info on the Bird 43. If I remember rightly, the power limit in Europe was 10W, and I don't remember which slug was in use. 5% of FSD may have produced a
I found out from Bird that the 10H slug is no longer in production. Stopped 7 years ago. Had issues with accuracy and very difficult to build. The 25H is currently in production. Accuracy is within
You might check Coaxial Dynamics (CDI). Their slugs are interchangeable with the Bird slugs and they have some ranges that Bird might not, apparently. Some of the less common Bird slugs (like the 250