VLBA RFI Bulletin 4:  Ft Wingate Missile Launch Scheduled:

The military is planning another missile launch from Ft Wingate
for Monday, February 02, 1998.  The impact zone is somewhere in
the WSMR, with the missile trajectory skirting the north arm of
the VLA.  During previous Ft Wingate missile launches, RFI increased
at the VLA and VLBA-PT receivers due to missile and missile payload
telemetry, tracking radars, and booster and missile recovery 
coordination communications.  The VLA and VLBA-PT should expect
increased 4-Band (VLA only), P-Band, L-Band, S-Band (VLBA-PT only),
and C-Band RFI from before the scheduled 6 AM launch, until around
noon, Monday.

The following frequencies have experienced RFI during previous
Ft Wingate missile launches:

	5700 MHz, - 5900 MHz, high C-Band: skin track
	2200 MHz,             S-Band: telemetry
	 403 MHz, -  404 MHz, above our P-Band: WX telemetry

In addition, the following L-band frequencies typically experience
increased RFI during any military activity at WSMR:

  	1357    MHz
	1365    MHz
	1369    MHz
	1385    MHz
	1393    MHz