TX/RX Bird VHF 6 inch cavity T-pass filter 1/4 wave 144-174 MHz

Description

ONE used TX-RX Systems Bird VHF cavity T-pass filter.  6 5/8 (6.625) inch 144-174 MHz 1/4 wave 26 inch long units with type N female connections.  Units marked as 74-37-xx T-pass multicoupler gear.
If you place a short circuit terminator on the 2nd port of a T-pass loop the unit will act as a regular band pass cavity.  This listing does NOT include the short circuit terminator, but you can make your own out of a type N-male connector.  You can also order kits from the factory in Angola, NY to swap out the loops for conversion to a Vari-Notch (BpBr), series notch, loop amp, whatever you need.
No cables, isolators, loads, or mounting hardware included.  If you have something specific you are looking for, please contact me and we can see what we can do.
Sorry, I am unable to do tuning.
Photos typical of condition.  Units may have dust from storage and/or other signs of light wear but will be inspected for any real damage before shipping.
Shipping calculated to your ZIP code.  If you want to buy multiples, it might be worth it to ask me for a combined shipping quote to get you the correct price.  eBay struggles with dimensional weight calculations on items like this.
Units will be well-packed in packing peanuts with the rods set all the way in to reduce the likelihood of damage during shipping.
Product Specifications
Item No    74-37 Series
Item Name    T-pass Cavity multicoupler
Frequency Range    144-174 MHz
Max Power per Cavity    270 W, per cavity @ 0.5 dB IL
60W, per cavity @ 3.0 dB IL
Impedance Ω    50
VSWR    1.25:1 max.
Cavity Length - Electrical    1/4λ
Temperature Range    -30 to +60 °C
Cavity Diameter    6.625"
Number of Cavities    1
Connectors    N
Dimensions H x W x D
Models: 74-37-xx
26" x 6.625" x 6.625"
(660.4 x 168.3 x 168.3 mm)
Kit Number     Frequency Range     Type
76-37-01    144-174 MHz    Bandpass
76-38-01    144-174 MHz    T-pass
76-37-03    144-174 MHz    Vari-Notch Low Pass
76-37-04    144-174 MHz    Vari-Notch High Pass
76-37-05    144-174 MHz    Series-Notch Low Pass
76-37-06    144-174 MHz    Series-Notch High Pass