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Total 2551 documents matching your query.

141. Re: [TenTec] Argonaut VI Microphone (score: 1)
Author: Bob McGraw K4TAX <rmcgraw@blomand.net>
Date: Sat, 5 Oct 2019 20:44:45 -0500
I would check the mike connector wiring and compare that with the mike you may be using.   Usually the Yaesu and Kenwood mikes, wired correctly, will work.  The ICOM mikes, doubtful.   Any dynamic lo
/archives//html/TenTec/2019-10/msg00005.html (7,898 bytes)

142. Re: [TenTec] Troubleshooting Century 21 Power Issue (score: 1)
Author: Bob McGraw K4TAX <rmcgraw@blomand.net>
Date: Sun, 6 Oct 2019 21:12:08 -0500
Sorry to learn the news. Unless you want a matching Tentec supply, I'd opt for an inexpensive 12 volt supply. I purchased a new switching supply which I found to be astonishing clean radiation wise f
/archives//html/TenTec/2019-10/msg00015.html (15,766 bytes)

143. Re: [TenTec] Corsair SWR goes high as power is increased (score: 1)
Author: Bob McGraw K4TAX <rmcgraw@blomand.net>
Date: Thu, 10 Oct 2019 20:58:07 -0500
When a transmitter has spurious output and fed into a dummy load, since the load is resistive and 50 ohms at all frequencies, the SWR will always be 1:1 regardless of frequency or frequencies applied
/archives//html/TenTec/2019-10/msg00035.html (9,918 bytes)

144. Re: [TenTec] 707 wiring (score: 1)
Author: Bob McGraw K4TAX <rmcgraw@blomand.net>
Date: Sat, 12 Oct 2019 20:46:26 -0500
Yes, and inside the mike is a 1 mfd non-polar capacitor in series with the mike output.   If you change this to a 0.1 mfd you will find the bottom end  {low frequency}  cleans up nicely. Otherwise, i
/archives//html/TenTec/2019-10/msg00040.html (9,714 bytes)

145. Re: [TenTec] 707 wiring (score: 1)
Author: Bob McGraw K4TAX <rmcgraw@blomand.net>
Date: Sat, 12 Oct 2019 20:52:03 -0500
From the original Tentec drawing; Pin #1 is mike HIGH Pin #2 is mike LOW Pin #3 and pin #4 are connected direct to the PTT switch. The shell should be used as the shield/ground. 73 Bob, K4TAX On 10/1
/archives//html/TenTec/2019-10/msg00041.html (8,774 bytes)

146. Re: [TenTec] 707 wiring (score: 1)
Author: Bob McGraw K4TAX <rmcgraw@blomand.net>
Date: Sat, 12 Oct 2019 21:04:54 -0500
This is a dynamic mike which, like most all dynamics, exhibit noticeable proximity effect.  That is , the closer the mike to the mouth, the more bottom end.   Also, as I recall, the element is closer
/archives//html/TenTec/2019-10/msg00043.html (8,322 bytes)

147. Re: [TenTec] 707 wiring (score: 1)
Author: Bob McGraw K4TAX <rmcgraw@blomand.net>
Date: Sun, 13 Oct 2019 07:19:05 -0500
Thank you for correcting my error in generalization. 73 Bob, K4TAX Proximity effect is a characteristic of CARDIOID mics, specifically single-D cardioid mics). It has NOTHING to do with whether the m
/archives//html/TenTec/2019-10/msg00045.html (10,212 bytes)

148. Re: [TenTec] Orion (score: 1)
Author: Bob McGraw K4TAX <rmcgraw@blomand.net>
Date: Sun, 13 Oct 2019 10:54:16 -0500
About 500 ma for the PA stage is correct. 73 Bob, K4TAX Sent from my iPad _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman
/archives//html/TenTec/2019-10/msg00047.html (7,306 bytes)

149. Re: [TenTec] Omni 7+ (score: 1)
Author: Bob McGraw K4TAX <rmcgraw@blomand.net>
Date: Wed, 16 Oct 2019 16:20:33 -0500
I recall that Kent, K9ZTV has a new Tentec Omni VII+. 73 Bob, K4TAX I have been looking at possibly purchasing a new radio and am curious as to what you think about the new rig? Thanks, Dan WD4LUR __
/archives//html/TenTec/2019-10/msg00056.html (7,225 bytes)

150. Re: [TenTec] looking for filters (score: 1)
Author: Bob McGraw K4TAX <rmcgraw@blomand.net>
Date: Tue, 22 Oct 2019 09:38:14 -0500
Please describe "lost all its filters".    Just not working or perhaps physically removed? Also are you looking for the 6.3 MHz filters or the 9.0 MHz filters? Might check with Vibroplex/INRAD as the
/archives//html/TenTec/2019-10/msg00064.html (7,905 bytes)

151. Re: [TenTec] looking for filters (score: 1)
Author: Bob McGraw K4TAX <rmcgraw@blomand.net>
Date: Tue, 22 Oct 2019 10:34:00 -0500
Ok the 2.4kHz is standard in the 6.3 MHz IF. The others would also be the 6.3MHz IF filters. There also those BW filters that were available for the 9.0MHz IF. Bob, K4TAX Sent from my iPhone
/archives//html/TenTec/2019-10/msg00067.html (9,705 bytes)

152. Re: [TenTec] frequency adj. (score: 1)
Author: Bob McGraw K4TAX <rmcgraw@blomand.net>
Date: Wed, 23 Oct 2019 16:56:07 -0500
Dale: The spec as I recall is +/- 50 Hz.  Looks as though you are well within that spec.  Oh by the way,   .22 Hz is ~1/4 of one Hertz. I think you mean 22 Hz. You should check all bands and determin
/archives//html/TenTec/2019-10/msg00071.html (9,266 bytes)

153. Re: [TenTec] TenTec Digest, Vol 202, Issue 18 (score: 1)
Author: Bob McGraw K4TAX <rmcgraw@blomand.net>
Date: Thu, 24 Oct 2019 15:15:25 -0500
Yes, I would like to know where the software adjustment is located.  I don't see that item in the Menu system. 73 Bob, K4TAX How can I find that frequency adjust in the Omni VI software menu? Thanks,
/archives//html/TenTec/2019-10/msg00083.html (24,637 bytes)

154. Re: [TenTec] TenTec Digest, Vol 202, Issue 18 (score: 1)
Author: Bob McGraw K4TAX <rmcgraw@blomand.net>
Date: Thu, 24 Oct 2019 19:06:41 -0500
To my knowledge there is NO menu available adjustment for correcting any error in frequency of the reference in the radio. It is a physical adjustment either by a trimmer by the crystal oven, or on t
/archives//html/TenTec/2019-10/msg00087.html (33,502 bytes)

155. Re: [TenTec] Omni Vl Option 3 SSB TX Problem (score: 1)
Author: Bob McGraw K4TAX <rmcgraw@blomand.net>
Date: Mon, 9 Sep 2019 08:22:02 -0500
My earlier response was done while enjoying my coffee on the deck.    Now with schematic in front of me, here's my suggestions.    First, electrolytic capacitors are known to decrease in value as the
/archives//html/TenTec/2019-09/msg00024.html (11,295 bytes)

156. Re: [TenTec] Omni Vl Option 3 SSB TX Problem (score: 1)
Author: Bob McGraw K4TAX <rmcgraw@blomand.net>
Date: Mon, 9 Sep 2019 09:20:59 -0500
Also check to see if the back panel mike/line input is connected to any external device. There is no switching between the front panel MIC input and the rear panel input. Only some degree of resistiv
/archives//html/TenTec/2019-09/msg00026.html (12,481 bytes)

157. Re: [TenTec] Omni VI with Option 3 for sale (score: 1)
Author: Bob McGraw K4TAX <rmcgraw@blomand.net>
Date: Sat, 14 Sep 2019 08:21:17 -0500
You can check the filters installed by pressing a filter selection.  If the receiver goes dead, there is no filter in that slot. The standard filter is 2.4 kHz with optional filters of 1.8 kHz, 500 H
/archives//html/TenTec/2019-09/msg00042.html (10,179 bytes)

158. Re: [TenTec] Eagle, no 80m (score: 1)
Author: Bob McGraw K4TAX <rmcgraw@blomand.net>
Date: Sun, 22 Sep 2019 08:44:43 -0500
I would suspect a relay or relays on the LPF {Low Pass Filter} board has failed.   That would be K11 or K2 as they switch the filter components for 80M both TX and RX.  The relay coils are wired in p
/archives//html/TenTec/2019-09/msg00054.html (9,389 bytes)

159. Re: [TenTec] 80m relays (score: 1)
Author: Bob McGraw K4TAX <rmcgraw@blomand.net>
Date: Thu, 26 Sep 2019 08:51:42 -0500
They are available from Mouser or Digikey. About $4 each. Bob, K4TAX Sent from my iPhone
/archives//html/TenTec/2019-09/msg00061.html (7,328 bytes)

160. Re: [TenTec] Issues aligning Omni 6+ (Mod. 564) FM TX carrier frequency (score: 1)
Author: Bob McGraw K4TAX <rmcgraw@blomand.net>
Date: Tue, 6 Nov 2018 09:34:31 -0600
Perform the BFO alignment in the sequence defined in the manual. All steps must be done regardless of the mode you operate or do not operate. Be sure the radio is up to operating temp. Perform the se
/archives//html/TenTec/2018-11/msg00012.html (9,612 bytes)

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