Check the listing for details. HP AGILENT EXTENDER BOARDS - Model 4194A and 4195A Spectrum Analyzer KIT FORM. Condition: New. Listed at 120.00 USD. HP AGILENT EXTENDER BOARDS - Model 4194A and 4195A Spectrum Analyzer KIT FORM Two extender boards needed to troubleshoot and repair the HP 4194A and 4195A network analyzers in KIT FORM**. Kit only needs to have buyer/builder needs only to solder din connector terminals. This kit includes the following extender boards: Two 32X2 etched boards. Two 32X1 etched boards. Two male DIN connectors. Two female DIN connectors. Each 3 rows, 32 pins. Width 3.5 inches (95 mm) Height 8 inches (204 mm) with connectors installed. TO ORDER MAKE OFFERS AND TO SEE OTHER ITEM OFFERED GO TO: https://www.ebay.com/str/sparko6079?_trksid=p2047675.l2563 I can custom make almost any extender board. With basic information about the extender you need I can program the automated CNC machine I have to produce what you need. I do not charge extra for customizing a board or set of boards needed to service most radios and test equipment. With basic information from EBay buyers I produce a set to sell to them through EBay and then offer the same extenders to other buyers on EBay. If you have an idea for an extender board or extender board set you or others need please contact me so I can make up a design and offer it on EBay. Thank you and best regardsJohn WA1ESO