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121. Re: [TenTec] 1208 Transverter (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Wed, 14 Jan 2009 13:16:11 -0600
But on receive they see the whole RF bandwidth, at least 5 or 6 MHz, and on transmit they see all the components of the transmitted SSB signal. In either case they can contribute intermod products, w
/archives//html/TenTec/2009-01/msg00126.html (10,103 bytes)

122. Re: [TenTec] 1208 Transverter (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Thu, 15 Jan 2009 09:21:26 -0600
What stand along $100 2m rig does CW and SSB (nearly as well as the CorsairII)? And is as compact as the 1208? 73, Jerry, K0CQ
/archives//html/TenTec/2009-01/msg00135.html (9,155 bytes)

123. Re: [TenTec] Centurion question (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Sat, 17 Jan 2009 11:08:24 -0600
Its the nature of a DC supply to soar with no load and to droop with load. Has been since rectifiers and filter capacitors were invented. With a light load the DC voltage soars to the peak of the AC
/archives//html/TenTec/2009-01/msg00182.html (11,535 bytes)

124. Re: [TenTec] Centurion question (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Sat, 17 Jan 2009 18:48:03 -0600
You have to remember that in linear service the RF plate voltage will reach about twice the DC. On a plate modulated PA the peak RF voltage reaches 4 times the DC supply voltage. Many a tube (not nec
/archives//html/TenTec/2009-01/msg00194.html (12,086 bytes)

125. Re: [TenTec] Centurion question (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Sat, 17 Jan 2009 19:45:46 -0600
The filament thrives more than the plate when brought up slowly. Most tubes larger than these 500 watt plate dissipation rating tubes have a peak filament or heater current rating on the data sheet.
/archives//html/TenTec/2009-01/msg00197.html (10,978 bytes)

126. Re: [TenTec] Ham Radio Deluxe (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Sun, 18 Jan 2009 09:40:27 -0600
4 to 5 is connecting the handshake Request To Send to Clear To Send. RTS to CTS. 6 to 8 to 20 is connecting the handshake Data Set Ready to Data Carrier Detect and Data Terminal Ready. DSR to DCD and
/archives//html/TenTec/2009-01/msg00204.html (10,708 bytes)

127. Re: [TenTec] OT: Strange CW on 80m (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Sun, 18 Jan 2009 17:55:03 -0600
METAR uses 5 digit groups but four for the callsign. And ships report METAR data regularly. The rules specify a particular order of the groups, but not all observers can or have read the rule book. A
/archives//html/TenTec/2009-01/msg00216.html (10,778 bytes)

128. Re: [TenTec] Information about chokes needed (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Sun, 18 Jan 2009 20:52:21 -0600
Winding a RF choke that covers 160 to 10 with all the WARC bands is not a trivial task. Many of the 50s vintage chokes go series resonant in a WARC band or two. The best choke winding information has
/archives//html/TenTec/2009-01/msg00228.html (9,657 bytes)

129. Re: [TenTec] Antenna question (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Thu, 22 Jan 2009 10:43:19 -0600
QST last month or two showed wrapping excess line around an air cored assemble. Just put the turns side by side. I'm sure the coupling turn to turn has some effect, but the whole purpose is to move t
/archives//html/TenTec/2009-01/msg00289.html (10,884 bytes)

130. Re: [TenTec] MPF132? (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Thu, 22 Jan 2009 13:26:51 -0600
I believe Dan's Small Parts has both 3N211 and MPF131. The 131 will be very close to the 132 in performance. The 211 is much superior, but might have a chance of getting regenerative or oscillating i
/archives//html/TenTec/2009-01/msg00293.html (8,580 bytes)

131. Re: [TenTec] Paragon II RS-232 noise (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Sat, 24 Jan 2009 18:23:01 -0600
Pin 1 is chassis ground. Some devices have neglected to connect it and that can compromise the cable shielding. Its certainly likely. Then there are RS-232 drivers and RS-232 drivers. The rules of RS
/archives//html/TenTec/2009-01/msg00311.html (12,099 bytes)

132. Re: [TenTec] External Speaker Recommendations - Omni VI ? (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Sun, 25 Jan 2009 13:54:16 -0600
So the real problem is that the roofing filter is narrower than the standard SSB filter which makes the carrier frequencies for USB and LSB too far from the filter pass band corners, or too far down
/archives//html/TenTec/2009-01/msg00318.html (8,629 bytes)

133. Re: [TenTec] Molex Connectors (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Tue, 27 Jan 2009 14:04:18 -0600
But not the series that fits the power on vintage Tentecs. They might have the mate for the remote VFO though. Last I checked the prices from TenTec or Mouser for the power connector were nearly the
/archives//html/TenTec/2009-01/msg00361.html (9,667 bytes)

134. Re: [TenTec] Ten Tec Power Connectors (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Tue, 27 Jan 2009 14:36:25 -0600
You don't have to work that hard. Its the Amp Universal Mate-N-Lok II connector line. 4 pins. Plug housing on the cable, 770019. Female or socket pins in the plug, 770247. Strain relief 641776-2. Bas
/archives//html/TenTec/2009-01/msg00365.html (9,120 bytes)

135. Re: [TenTec] Ten Tec Power Connectors (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Tue, 27 Jan 2009 21:31:19 -0600
You will need socket pins too. They don't come with the shells. 73, Jerry, K0CQ
/archives//html/TenTec/2009-01/msg00381.html (8,829 bytes)

136. Re: [TenTec] RF Gain and AGC Question (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Wed, 28 Jan 2009 15:25:20 -0600
You will be happier with the AGC/AVC ON than off. Your complaint about distortion with the RF gain all the way up is a classic symptom of faulty AGC or AGC turned off. I gather that the button out is
/archives//html/TenTec/2009-01/msg00392.html (8,570 bytes)

137. Re: [TenTec] Help with deaf Argonaut 509... (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Wed, 28 Jan 2009 22:04:28 -0600
That's been known to happen to every TenTec with that option. 73, Jerry, K0CQ
/archives//html/TenTec/2009-01/msg00400.html (8,150 bytes)

138. Re: [TenTec] OT: Search for Bill Orr Column/article (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Thu, 29 Jan 2009 13:28:16 -0600
I probably have it both ways but no copier. I've not yet tried the DVDs that I bought recently on ebay with all the ham radio magazines. Maybe later today. 73, Jerry, K0CQ
/archives//html/TenTec/2009-01/msg00408.html (8,131 bytes)

139. Re: [TenTec] bill orr article (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Fri, 30 Jan 2009 12:52:38 -0600
The particular article requested talks only about the 3/2 wave antenna for 20m. It says little or nothing about use on other bands. Fact is (from that article) that there have been many G5RV designs
/archives//html/TenTec/2009-01/msg00441.html (9,600 bytes)

140. Re: [TenTec] Replacement Bulbs for S-Meter (score: 1)
Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Date: Fri, 30 Jan 2009 15:07:04 -0600
Mouser is a good source, also any AC/DC radio (using tubes) with a dial light will have a #47. www.mouser.com Or would tht be a 14 volt lamp like an 1892? A 47 is 6 volts. 1892 may be at truck stops
/archives//html/TenTec/2009-01/msg00445.html (8,056 bytes)

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