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Total 6 documents matching your query.

1. [TenTec] TenTec 228 ATU (score: 1): Author: Marinus Loewensteijn <zl2ml@hotmail.com>; Date: Tue, 24 Jun 2008 15:35:52 +0800; Just bought a 228 ATU. Front is immaculate, bottom and top have some scratches but a paintjob will take care of that. The SO239 sockets are well used so those are replaced with N-sockets in line with; /archives//html/TenTec/2008-06/msg00408.html (8,906 bytes)
2. Re: [TenTec] TenTec 228 ATU (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Tue, 24 Jun 2008 10:26:15 -0600; The losses in a T-match are greatest when the loaded Q of the match is higher than necessary for the impedance transformation needed. This a condition easy to achieve because there are many L and C c; /archives//html/TenTec/2008-06/msg00412.html (10,808 bytes)
3. Re: [TenTec] TenTec 228 ATU (score: 1): Author: Marinus Loewensteijn <zl2ml@hotmail.com>; Date: Fri, 27 Jun 2008 15:19:50 +0800; Earlier I invited on the list input in a proposed change to the TT 228 ATU. I was considering placing an impedance transformer at the output of the transmatch in an effort to lower the losses when ma; /archives//html/TenTec/2008-06/msg00472.html (8,866 bytes)
4. Re: [TenTec] TenTec 228 ATU (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Fri, 27 Jun 2008 08:51:01 -0600; Do you know that switch was melted feeding a reasonable load or was it used to feed a short wire with a very low radiation resistance with more than the tuner's rated power? You can increase the band; /archives//html/TenTec/2008-06/msg00477.html (11,135 bytes)
5. Re: [TenTec] TenTec 228 ATU (score: 1): Author: Marinus Loewensteijn <zl2ml@hotmail.com>; Date: Sat, 28 Jun 2008 12:31:59 +0800; In the Tentec 228 ATU the toroid is encased in plastic and hte windings are silverplated copper. The plastic is sued to keep the windings from touching each other and then there is just a wiper conn; /archives//html/TenTec/2008-06/msg00484.html (11,047 bytes)
6. Re: [TenTec] TenTec 228 ATU (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Sat, 28 Jun 2008 10:54:44 -0600; I'm talking transformer. This is a voltage device. No, just a 50 ohm resistor and I tested the input Z with a RX-meter and it was as narrow as a Pi network. Hardly covered one band. It was fairly lar; /archives//html/TenTec/2008-06/msg00489.html (13,088 bytes)

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