: Topband: QRP and Bird 43 Watt meter help
>
> 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 10% full scale :-(
>
> A compa
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 10% full scale :-(
A company called REDOT make an HF meter for around 130 bucks.
Any experience wit
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 major
error on whichever slug it was, and I was a visitor, busy at a CCIR or
ITU meeting.
Bob
-boun...@contesting.com]
On Behalf Of Tom W8JI
Sent: Saturday, June 30, 2012 5:25 PM
To: topband@contesting.com
Subject: Re: Topband: QRP and Bird 43 Watt meter help
> Many years ago at 4U1ITU I found the Bird 43 grossly underestimated
> the power output on 160, rather embarrassing at th
> Many years ago at 4U1ITU I found the Bird 43 grossly underestimated
> the power output on 160, rather embarrassing at the temple of
> regulation.
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
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
- Original Message -
From: "Bob Eldridge"
To:
Sent: Saturday, June 30, 2012 1:44 PM
Subject: Re: Topband: QRP and Bird 43 Watt meter help
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 Coaxial Dynamics that sells a wattmeter that uses elements
that are compatible with Bird wattm
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 4U1ITU I found the Bird 43 grossly underestimated
the power output on 160, rather embarrassing at
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
>The 250H range is 2 to 30 mhz 160M is not quite covered but I think
>is ok.
___
UR RST IS .
4TV"
To:
Sent: Saturday, June 30, 2012 12:32 PM
Subject: Re: Topband: QRP and Bird 43 Watt meter help
>
>> There are lower wattage slugs but for a much higher frequency range.
>> The 250H range is 2 to 30 mhz 160M is not quite covered but I think
>> is ok.
>
> Bird
> There are lower wattage slugs but for a much higher frequency range.
> The 250H range is 2 to 30 mhz 160M is not quite covered but I think
> is ok.
Bird make HF (H) elements at 5, 10, 25, 50, 100, 250, 500, 1000, 2500,
5000 and 1 Watts. Finding the 5, 10, or 25 Watt elements new may
be a t
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. with the 250H slug
I measure 5 watts, first mark from the bottom of scale. Not very accurate or
i
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