Hello group. Just a brief note to say that I've just received a delivery of 3C90 toroids. 58mm for high power and the smaller 25mm. I've not used the 58mm in this material before so I'll check over t
In a message dated 2/21/04 4:07:04 PM GMT Standard Time, [email protected] writes: Hi Dave...WHAT LF "SEASON" ....it is certainly not a Propagation "season", summer Dx was better last year th
In a message dated 2/21/04 10:27:25 AM GMT Standard Time, [email protected] writes: David Yes but are you going to put 3B9C on 136?? 73, Tom G3OLB Well spotted Tom. I am off to Rodrigues with
Some time ago my local club station at Whitton operated 73 and 136kHz on a Friday night. This was a great learning experience for the club members as usually something dramatic would happen. Unfortun
In a message dated 2/18/04 8:03:32 PM GMT Standard Time, [email protected] writes: "When I have looked at designs in amateur radio magazines or internet for a clip on RF Ammeter the designs seem to b
In a message dated 2/10/04 12:35:33 PM GMT Standard Time, [email protected] writes: Well, I was really thinking of GPS locked PSK rather than any incoherent mode. WIthout the need for clock a
In a message dated 2/5/04 9:45:06 PM GMT Standard Time, [email protected] writes: Thanks for the very useful data Jim, I did in fact get a reply from the organiser of the kit/project &he has stated t
In a message dated 1/31/04 1:47:14 PM GMT Standard Time, [email protected] writes: Hi all at LF, Can anyone advise me regarding using an external vfo on the 300 w transmitter external vfo option. Has
In a message dated 3/6/04 12:23:31 AM GMT Standard Time, [email protected] writes: Hi Dave good copy here this evening at about 2115 and again around 2200 from G0MIN. Nice to hear the call on
In a message dated 3/19/04 9:01:45 AM GMT Daylight Time, [email protected] writes: Well, if the stability and frequency accuracy of 2m beacons is anything to go by he'll have a terrible job finding b
In a message dated 3/22/04 8:40:06 AM GMT Standard Time, [email protected] writes: A 10000 km north-south path seems to work well on LF. Maybe we (Europeans) should look for some interes
In a message dated 3/3/04 11:45:16 AM GMT Standard Time, [email protected] writes: Subj: LF: Re: Re: Your software from G3XYM - virus ? Date: 3/3/04 11:45:16 AM GMT Standard Time From: Alan.M
Double trouble. Are you certain of the windings being correctly phased for "push-pull"? You may have made a "push-push doubler"??? 73, Bob Hi. Have been following this topic. Maybe this will help. I
In a message dated 5/13/04 10:32:46 PM GMT Daylight Time, [email protected] writes: Can anyone tell me the address to David's website? The old address doesn't work anymore. Mike WE0H WD2XGI Sor
In a message dated 5/18/04 9:19:13 PM GMT Daylight Time, [email protected] writes: Wonder what current I should have when applying lower supply voltages to the FET's. For example. what currents to o
In a message dated 25/05/2004 22:01:42 Central Europe Standard Time, [email protected] writes: Maybe somebody has something to say about this...... I think you're spending too much time measuring th
It's been a few years since I looked at Audio Amp IC's on the LF bands, but I'm now trying to find one that works to some degree at 136kHz. I need to find an audio IC capable of about 15 Watts as a m
In a message dated 01/06/2004 20:38:40 Central Europe Standard Time, [email protected] writes: I also found another error in the schematic diagram: R11 and R34 (was 12k) changed to 560Ohm-820Ohm. Th
In a message dated 08/06/2004 08:22:21 GMT Standard Time, [email protected] writes: So it seems to me that class D and E amplifiers should preferably be followed by a low pass filter with a seri
In a message dated 29/06/2004 09:28:51 GMT Standard Time, [email protected] writes: Mike, Dave (G0MRF) has a 250W linear amp design, but I just noticed that his homepage ( http://www.g0m
