Bill, The supply is a neutral (which is theoretically at ground potential and actually may be so, or very close to it) and a single phase 240volt line - in my case 234, as it happens. The neutral is
On 10/6/2013 8:49 AM, George wrote: Hi Carl, What size wire would you recommend for a 1A supply? If there is a choice of where to insert the wire would you use it in the RF compartment or near the B+
Chile would seem in practice to be not that much different to most other countries! <snip> Apparently this doesn't include IM3 as I think few amps, or even rigs sold in the US have an IM3 as good as
The 43 dB applies at 2.5 times the necessary bandwidth away, or for SSB, at about 7.5kHz away from the centre of the transmission. I would like to send you the results of the measurements of SM5BSZ w
It just so happens that at 1345 UTC this Saturday, I'm giving a presentation at the RSGB National Convention entitled 'Spreading the Sewage' - we didn't think that 'Spreading the S**t' was quite appr
Sherwood has a list of receivers. It would be nice for there to be an online list of transmitter specs as well. Any chance you tested the Icom IC-7200? Have you tested any of the old mobile tube rigs
Sherwood has a list of receivers. It would be nice for there to be an online list of transmitter specs as well. Any chance you tested the Icom IC-7200? Have you tested any of the old mobile tube rigs
Lots of pictures, and full description of the system, done while I was building it, are here: http://ludens.cl/paradise/turbine/turbine.html That is impressive. It's not only quite an accomplishment,
Anyone could me put in the right way for next coming contest. Witch connection plug I best use on the back of the FT1000D for keying this old TL922. I saw that the Tl922 keying system has been modifi
On 10/18/2013 6:38 PM, Dan Hearn wrote: Jean: I just finished building an interface to key my TL922 from my FT5000. The 922 has 120 volts on the keying line, too much for a small signal transistor. I
When Palstar bought the line they went to 3 seperate toroids and kept the balun. Is Palstar still building amps? 73 Roger (K8RI) Ive worked on several of all models from both companies and havent had
Has anyone had experience using microwave oven door glass as a shielded viewport for an HF amp? Any ideas about attenuation at HF frequencies? I'm considering a three-tube 3500ZG amp as one of my wi
This does not sound right. I assume you are saying that they are glass fuses. I suspect if you blow one in a HV powe rsupply it will shatter or explode into pieces if you have a reasonable value of f
so, do you have any point, link, etc where I can learn about *Design with valves* ??? REPLY: The ARRL Handbook is a good place to start. Nearly everything you need is in there and when you run acros
I have one from 75, or 76 and an RSGB hand book from the mid 60s. I've not seen any SAI handbooks since then, but few around here have them. 73 Roger w9gb Sent from iPad Air _________________________
I've finally applied full drive to my 4CX1000A amplifier. Here is what I'm seeing: I have tried two tubes, both pulls. In one case I can run about 1kW out, and with the other, maybe 1200. What happen
Been there done that and is why I bought a 3000 W CCS RCA load, built by Bird, with a tapered snout and rated to 1000 mc at a hamfest almost 30 years ago. It included a seperate 5" wattmeter in a cab
Having used, misused, and abused N-type connectors, experience in the real world has shown me that these are not connectors to use for QRO. Yes, I know hams who have used them at the legal limit for
On 11/11/2013 7:46 AM, Dr. David Kirkby wrote: On 11 November 2013 08:04, Roger (K8RI) <k8ri@rogerhalstead.com> wrote: With a center fed, sloping dipole, which is far from being a balanced antenna, I
On 11/11/2013 4:54 PM, peter chadwick wrote: For a long run down a tower, you need to tape the cable to the tower at about 3 foot intervals to stop things moving. For a crank up, fold over tower, my