I have sub-40ps risetime pulse generators for sale for £50. They are in stock and looking for good homes.
1Vp-p 10MHz squarewave output. Has external trigger output for sampling scopes.
Powered and configured from USB. Can be used in the field if powered from USB battery bank.
Ships ready to use.
BNC jack for direct connection to your test equipment.
Designed and hand-built in the UK by me.
Available in stock for £49.99