Not to prolong the agony of such discussions, but a copyright in the US is good for 28 years and can be renewed once (at least the last time I looked a few years ago) making the maximum time of copyr
I have cleverly filed my Clipperton-L doc. I am hoping someone can help. The parasitic suppressor resistors have broken. I believe they are 100 ohm 2W composition. Can anyone confirm the value? I am
The existing units are about 0.25 inches (maybe 0.3125) on center from the tube envelope. I am not sure how hot the tube envelope gets offhand but it can't be that good for the resistor. I bought the
I may have tried it WARC bands at some point but that would have been long ago. I do not currently have any WARC band antennas. My Clipperton-L also has an added tuned input board which does not incl
I am looking for suggestions regarding my Clipperton-L. The basic problem is that there is no output. No apparent plate current. I did several things: 1. I replaced the power supply board which seems
I have had this amp since the 1980's and never had trouble with the TR relay (well, other than it is slower than molasses). It was untouched in the mods I did. But I did check continuity of the relay
I did solder that small wire. I have continuity from the B+ pad on power supply board to the plate caps. The small wire came wrapped on a terminal lug so it was obvious I needed to do something with
At the moment I assume I have RF to the tube as I did not disconnect any of the wires from input connector to the tube but I will need to verify, The output network connections from the plate blockin
I know for some of the amps if you go to the page describing the amp at the bottom of the page is a parts list. For example, go to www.ameritron.com , select "Amplifiers" and then say AL-572 at the b
A number of you offered suggestions a couple of weeks ago and I checked those suggestions a couple of times. I have finally got back to trying to track down what is probably a silly error on my part
Switch contacts are OK by visual inspection and by ohmmeter. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
It turns out it doesn't matter about the bandswitch position - same result in all positions regardless of the transmitter freq. The bandswitch seems OK by visual inspection and with an ohmmeter. I ha
Not that I know of. The amp was working except it needed new parasitic suppressors. I replaced the suppressors, the plate RFC, and the plate blocking cap. The output network itself was not touched ex
Thanks to all that offered suggestions. It turns out to be a silly thing as I thought. When I pulled the two 200pf doorknobs for 160 tuning and put in a single 500pf it left a mounting hole that I de
A relatively big rotary bandswitch part that has the indents. 73, Larry W6NWS -- Original Message -- From: <n8de@thepoint.net> To: <kf8od@aol.com> Cc: <amps@contesting.com> Sent: Thursday, December 3
It is an old name that I haven't seen in several years. Last time I saw the name was probably in the early 1970's. I can't tell you more than that but I sure others on the list can. _________________
If you are taking it with you on a trip the airline might actually be cheapest. It would have to fit in their max overweight and/or oversize categories. I took an antenna to XV this year and it was o
The parts were in last year's (2011) catalog at least and possibly the 2010 catalog. Part availablility from MFJ has been mentioned here before. _______________________________________________ Amps m
I am no expert on this. I have a Dentron Clipperton-L that I had applied the 10M fix to it years ago. But I fried the parasitic suppressors when working WARC bands. At the suggestion of several on th
One day when I switched from CW to SSB mode on my Clipperton-L it blew the fuse with a good bang. The switch picks between a tap and one side of the power transformer secondary tap being for CW. I fo