be careful when using terms in different laguages. Mike> Litz wire usually has each strand insulated from the Geri> ... no, unfortunately not ... seems to be just the name english;german;type and mak
Do hardware shops in Germany really sell litz wire, Geri?< ... probably not the one you would call Litz-wire for RF applications, but in German, if it one single wire it is called "Draht" (which is t
In message <000e01c073ea$e1eb2740$3a47883e@default>, MAL HAMILTON <[email protected]> writes Your are all forgetting an important factor. The larger the antenna for the frequency of interest
The RC411 did. 73 de John Rabson G3PAI Actually in these modern microprocessor days it does not mean equalising the gain, it means adding an S meter correction table to the software, and running the
The tube was used for HF- and wideband-amplification up to 50MHz. The amplification could be regulated by varying the negative voltage at grid 3 - says the book. This seems a little unbelievable to m
Subject thread is heading back towards my territory! The silver EF50's were service issue valves - VR91 for the RAF, ARP12 for the army. I suppose the navy must have had them as well, but I don't rec
Alan is right,when I was at Hanslope I saw the 807 distribution amps and also some using EF80s the red metal case valve . Those Rhombic ants were enormous so I guess the signals were pretty large. 7
In message <[email protected]>, Talbot Andrew <[email protected]> writes Sorry, I confused you all and remembered the wrong device. The valves are E55L P
In message <[email protected]>, Andrew Talbot <[email protected]> writes It is only off for maintenance. They usually fire it up for a few hours during
This my seem a silly question, but I am curious. How is the audio quality of European LW BC stations? The bandwidth percentage is really something on those frequencies. Do they have special audio pro
I went to Holland recently, and listened to Deutschlandradio on 153 kHz. I have already noticed years ago that mediumwave and longwave signals are being attenuated or even completely faded out under
In message <[email protected]>, John Rabson <[email protected]> writes I have never heard meteors as they flash by, but one cold, crisp night in the early 1960s the
Sorry if this post is a little off-topic for the list but I felt something needed to be said. Apologies if it sounds like a lecture, my intention was simply to offer some constructive criticism on th
snip Any human attempt at laying these things down will always result in a long period of squinting, cleaning and picking between its teeth with a scalpel, including this, but it is amazing how well
snip Remarkable is Droitwich at 198kHz. There the carrier goes downward during modulation! I used to get that with my old AM Tx in the 50's! Cause: Lack of grid drive and improper loading/tuning. I w
In message <001c01c22cc4$0d1b4ba0$0100000a@roy>, HighGain <[email protected]> writes Hello LF'ers, And you will still not be ( Or ever will be ) as potentialy efficient as MM0ALM Dave Nr Stonehaven ev
DR. GREG ODILI Email: ([email protected] & [email protected]) Fax : 234-1-4401020 Lagos, Nigeria. Kindest attention , REQUEST FOR AN URGENT CONFIDENTIAL BUSINESS RELATIONSHIP I am so glad we
Not LF I know, but I have just been advised by a member of the British Vintage Wireless Soc. that they have arranged presentation of the original "2LO" transmitter to the Science Museum, and there is
I have put a microphone on my SLM and have been receiving bats. I used a tiny electret condenser mic capsule on the input of the D2006, with the usual 1.5V cell and blocking cap to power the capsule.
