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Reviews For: X-Lock VFO Stabilizer

Category: Specialized Amateur Communication Products

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Review Summary For : X-Lock VFO Stabilizer
Reviews: 11MSRP: (£22.46 ) Inclusive of VAT
Description:
The X-Lock locks a VFO to a crystal source to provide drift free operation. This designs takes a fresh approach to the "Huff-Puff" Frequency Locked Loop technique by using a processor to measure frequency and compute correction signals. The X-Lock employs a 100mSec count period to produce 10Hz "lock points" against which the host VFO will be held. Dual regulators are used to supply the digital and analogue sections of the circuit which in turn are optically coupled to produce an exceptionally clean control voltage.

The X-Lock will accept input signals from a few kHz up to 50MHz to provide up over 6 volts of control range. Features include auto lock/unlock during tuning, RIT detection and fast re-lock, power on reset auto centring, and a dual coloured LED to indicate lock and input states.

An adjustable delay of 1 to 15 seconds is applied to halt the correction process once a tuning change has been detected. This feature greatly enhances slow, fine tuning adjustments on the host VFO.

This new version features an improved RF input stage and connectors to remote the Status LED.
Product is not in production
More Info: http://www.cumbriadesigns.co.uk
# last 180 days Avg. Rating last 180 days Total reviews Avg. overall rating
00115
PA0FRI Rating: 2009-08-05
Great for the home brewer Time Owned: 0 to 3 months.
Although I successfully have used two vintage versions of PA0KSB's Huff and Puff stabilizer, I bought a X-Lock Stabiliser to test the design. I did the test with a Atlas-215x and the "upgraded" Huff and Puff worked very well with its PIC processor system. The VFO of the Atlas was rock stable during a 12 hour experiment.