<p>Please find below a list of interfaces that we are aware of. If others exist then please let us know sooner rather than later.</p><p>The electronics will be enclosed in a watertight aluminum box: Rose 01233311. This should be identical to those currently used to support some of the NRL 74 MHz receiver electronics, and the P-band receiver electronics in all antennas. The box should be mounted on the non-rotating central spine back-to-back with the P-band box.</p><p>The box has a MS3102R20-7P panel-mount connector to allow connection to the VLA 15 volt supply and the 9.6 Hz calibration signal. A MS3102R20-7S panel-mount connector on the box will be used to enable the 15 volt supply and calibration signal to be passed along to the P-band receiver electronics.</p><p>The box will also have two bulk-head feed-thru SMA connectors (female) to receive the crossed dipole 196 MHz signals.</p><p>To enable the P-band receivers to be used without modification to the current system we will provide 2 sets of N-type connectors (all female, one set for each polarization) that will allow the P-band outputs to couple through our box to the current VLA A-rack front- end system. </p><p>The 196 MHz antennas will connect to the Rose box containing the 196 MHz receivers via two flexible SMA cables that will pass through the two empty holes in the P-band antenna top balun plate (Drawing # D13155P02). </p><p>Mechanical support of the 196 MHz crossed-dipole will be provided by 4 PET (polyethylene-tera-phthalate) stand-offs that will clamp on the 4 to the 4-legs of the P- band antenna. In other words, we do not require any mechanical modification of the P- band antenna or support structure.</p><p>We will not use the VLA 115 volt connection. However, we will draw 1 amp of current from the VLA 15 volt supply.</p><p>Obviously someone needs to check existing cables to see what additional would be needed to connect the P-band system through our box.</p>