Equipment/Bird 43 Watt Meter

This item was kindly donated to the club by another radio Amateur.

Bird 43 Watt Meter
Model	43
Sub-category	Group:Amateur Radio
Status	Good working order
Consumables	None
Accessories	Inserts (Slugs)
Training requirement	Yes
Training link	Must hold an Amateur Radio license or be otherwise be proficient with RF
ACnode	no
Owner	Radio Club
Origin	Donation
Maintainers	Radio Club

Accessories

We have the following accessories for use with the Bird Watt Meter:

Inserts

Inserts or "slugs" are inserted into the hole in the front of the meter. A signal is then passed through the meter via the two N-Type connectors. The source of the signal should be connected to the left hand connector, and the right hand connector must be attached to a suitable dummy load or antenna. In normal operation (Forward Power) the arrow on the insert should face to the right, however its possible to twist the insert so the arrow is facing to the left to measure reflected power. SWR can then be calculated from the two values if required.

You should always use the appropriate insert for the power and frequency you are using. If you are unsure on the power output, start with the highest rated insert for the frequency and then switch to a more appropriate value.

Model Number	Frequency	Power Rating	Usage
5C	100 - 250 Mhz	5W	Measuring VHF signals up to 5W
100C	100 - 250 Mhz	100W	Measuring VHF signals up to 100W
10D	200 - 500 Mhz	10W	Measuring VHF/UHF signals up to 10W
100H	2-30 Mhz	100W	Measuring HF signals up to 100W
250H	2-30 Mhz	250W	Measuring HF signals up to 250W

Signal Samplers

The adjustable signal samplers allow you to tap into an RF signal allowing you to analyse the signal whilst operating. The attenuation of the sample signal can be adjusted.

Model Number	Frequency	Power Rating	Attenuation	Usage
4275	20 - 1000 Mhz	1000 W	35 to 80 dB	Tapping into VHF/UHF signals up to 1000 W
4273	1.5 - 35 Mhz	5000 W	-40 to 70 dB	Tapping into HF signals up to 5000 W