Hello All. This confirms my original posting that the magnatising current is greatly increased when the core shunts are removed, as previously stated use two with primaries in series, then lifting th
Hi Everyone. It looks as if I have really started something going, the main problem is obtaining the transformers, for too expensive to buy new. The obvious source are Council Tidy Tips, the problem
Hi Dennis. I manage quite well with a simple two reasonator filter with tapped capacitors for input and output impedance matching, response as follows, centre 501.9, 3dB, 495.8 & 508.26, 6dB, 492.77
Hi Pete. Having a weak DSL signal, how does your 500kHz TX output affect the DSL synchronisation?. I am in a similar position, and my 500kHz TX 100mW ERP cw causes complete loss of synchronisation di
Hi Richard. I am located in Luton Bedfordshire, locator IO91TV 73 Ken M0KHW Ken wrote: To all LF,s Sunday October 4th, I will be on 502.00 at 10.00 UTC, 100mW hand keyed cw. 73 Ken M0KHW. Where are y
Hi Stefan. Thanks Stefan, do you have a source for either the BV8 or the BV16?, I have been unable to find one. 73 Ken M0KHW -- Original Message -- From: [email protected] Stefan Schäfer T
Hi Paul. If I could locate some BY1800 or BY2000 (1800v & 2000 V) that would be better, but again have not found a stockist, the BY255 were from Germany. Ken M0KHW Ok Ken Further I would not worry as
Hi Paul. On my last mailing I got the BY255 current wrong. Ken M0KHW BY255 should be a suitable building block rated 1300V PIV 3A. Use equalizing resistors in parallell with each diode, typical value
Hello All. I am looking for a BY4 or BY6 or equivalent diode, BY4 4kv @ 1A, BY6 6kv @ 1A, I have searched the web and looked in Farnell, any ideas please. 73. Ken M0KHW
Hello Everyone. Thanks for the replies, I have some BY255's which are rated at 1300v at 1A, the input to the diode stack is about 2.3KV peak, and was planning to use two BY255s in series in each of t
Hi Tacey. Thanks for the reply. I only seached ebay up to 5kV. Ken Hello Ken How about these on ebay? 4pcs 1 Amp 10kV High Voltage Rectifier Item number:250539436700 Tracey Hello Everyone. Thanks for
More appliance operators Mal? 73 Ken M0KHW Interesting new rig offered by Waters and Stanton - the TX-2200A 100 Watt class D transmitter for 136kHz - VFO controlled with receiver muting. Made in Japa
Mal. I think my 500kHz Tx cost about £30, including aluminium sheet, Powdered Iron rings, a small vernier dial and one or two dead FETs. 73 Ken M0KHW -- Original Message -- From: "mal hamilton" <g3ke
Hello All. I have been reading the recent posting regarding the PA0RDT Mini-Whip earthing etc, and am becoming rather confused. I am hoping to construct a Mini-Whip over the Christmas break, but have
I am having problems accessing the group, my pc is striping out the underscores between rsgb and lf,and lf and group when I send from my address book. Any ideas as tobwhat may be the cause of this? 7
Hello Alan. A very interesting paper of yours, is it likely that there will be the same interaction between a T antenna and the PA0RDT Mini Whip? 73. Ken M0KHW Hi Stefan I hope it does not give you i
