Ordering and Prices
The easiest way to order is by using Paypal. You do not need to have your own Paypal account to use this facility with your own card. When you click ‘buy now’ it should bring up boxes for you to enter the product wanted and price. This not like the common shopping trolley – just enter the name of ALL the kits you wish to order and in the second box enter their total cost without any P and P charges. My Paypal button has been set to then automatically add £5 to your total for UK post and packing; for European orders please increase the price by £3 and by £6 for the rest of the world except the USA, to cover the additional overseas mail charges. The US postal system is now very expensive so needs a £11 supplement – sorry! The extra cost of ‘tracked’ delivery is not included – please ask if you want that. The Paypal payment should be automatically directed to Walford Electronics Ltd. at electronics@walfords.net I will usually acknowledge all orders and send the instructions as an e mail attachment.
You may alternatively pay by cheque (payable to Walford Electronics Ltd.) and send the order to me at the address given on the bottom of this page, but please do remember to add £5 to the cost for the UK postage & packing, and any extra overseas mail costs. Also that I do need your e mail address for the instructions. Should a parcel be lost in the post, you must tell me because Royal Mail will only consider claims from the sender and then only to £20! All prices are in Pounds sterling (GBP). If in doubt, contact me in advance by e mail. Value Added Tax is not charged and so cannot be deducted for overseas orders. We reserve the right to alter specifications and prices in the interest of improving our products. Goods supplied remain the property of Walford Electronics Ltd. until payment is complete.
Group Construction Projects
If the numbers of kits wanted are reasonable I may be able to offer a discount for multiple orders. My stocks of individual kits are usually small so advance warning is essential – it is generally best for the course organiser to make such orders. Course instructors should emphasize to candidates, especially for less experienced people, the value and thrill obtained from using the built item afterwards, instead of just choosing the cheapest item that will get you through some exam! Please feel free to consult me – electronics@walfords.net
Design philosophy
I put my design effort into the circuitry, because most builders will leave the circuit unchanged but they are often very happy to adapt the mechanical aspects themselves. All kits contain brand new quality components to build the unit as in the photos. The open style of construction is fine for bench use and gives good ventilation for improved reliability/stability; it also allows access to both sides of the PCB for ease of building & testing but they can be easily boxed if you wish. The instructions provided with each kit are extensive and detail the recommended build sequence, with suggested tests after each stage so that confidence grows as the project is built. It is essential to follow the recommended build sequence which should help you understand the design. My design work aims to ensure that each kit can be built and tested easily, and will work reliably despite the tolerances on part values and ‘disturbances’ due to supply or temperature variations; consequently there is a high probability it will work as intended.
Support
If you do get stuck, you can always contact me for advice – ideally by e mail. If this fails to eventually get it working, I am quite happy by arrangement to have the kit back for investigation/repair but sometimes I have to charge for this work! If you do damage parts, spares are usually available for most rigs but be aware that small orders tend to be expensive!
Walford Electronics Ltd.,
Vedal House, Vedal Drove, Long Sutton, Langport, Somerset TA10 9FB
Tel 01458 241103 or e mail me Tim Walford G3PCJ at electronics@walfords.net
Walford Electronics Ltd. 