[TenTec] Issues with Transmitting with Omni 6+
DJ
75a4 at cox.net
Fri Sep 18 00:45:32 EDT 2020
HI ALL,
Could use some help on this.
T voltage seems to be intermittent , driving me nuts. RX is fine.
Jonesy. K6RCL
> On Sep 17, 2020, at 9:00 AM, tentec-request at contesting.com wrote:
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> Today's Topics:
>
> 1. ARGOSY 2 (ROLAND HOWELL)
> 2. Re: ARGOSY 2 (Ken Brown)
> 3. Re: ARGOSY 2 (Josh Gibbs)
> 4. Re: ARGOSY 2 (ROLAND HOWELL)
> 5. Re: ARGOSY 2 (Mike Bryce)
> 6. Re: ARGOSY 2 (ROLAND HOWELL)
> 7. FS: Ten Tec 238B Tuner (Greg Breeden)
> 8. argosy 2 (ROLAND HOWELL)
> 9. Re: argosy 2 (Mike Bryce)
> 10. FS: Ten Tec 238b tuner (Greg Breeden)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 16 Sep 2020 17:30:14 +0100 (BST)
> From: ROLAND HOWELL <snowy.howell at btinternet.com>
> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
> Subject: [TenTec] ARGOSY 2
> Message-ID: <220e10fa.1144.17497c0951b.Webtop.82 at btinternet.com>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
>
> Hi all
>
> Some progress on the above radio, voltages are very close to what the
> manual states, but still no TX.
>
> What should i see from the mixer board RF connector, i dont appear to
> see output drive on my Fluke meter feeding the RF amp?.
>
> Found a leaky cap on the control board, all changed for the next range
> higher working and 105 degree working types.
>
> Also found a mini relay 'hot melt glued' to a board, this had 2 x TX
> voltages wires (yellow) attached, or should have been, the soldering had
> not been done and the wires had broken free from the pins on the relay,
> the control wire was also soldered to the TX line, so cant see what it
> was supposed to do, i removed it and re-instated the wires correctly,
> unfortunately that didn't help the lack of TX.
>
> thanks to all for comments so far, keep them coming please.
>
> thanks
>
> 73
>
> Snowy G0HZE
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 16 Sep 2020 07:06:24 -1000
> From: Ken Brown <kenradiobrown at gmail.com>
> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
> Subject: Re: [TenTec] ARGOSY 2
> Message-ID:
> <CAGnjFf=xaecmRi0huYK_M1w0zjCqpPodX66hqHmtTtardGfX9A at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> What kind of Fluke meter are you using? Are you expecting to measure RF
> voltage with it? If a regular Fluke DMM you can reasonably expect to
> measure DC collector voltages and DC base bias voltages, but it is not
> really the right instrument to measure RF drive voltage. You'd be better
> off trying to make those measurements with an oscilloscope, preferably with
> a 10X probe so the circuit loading is around 10 Megohms and only a few
> picofarads. Or you could use a HF AC VTVM or FET VM that has the rectifier
> built into the probe.
>
> DE N6KB
>
> On Wed, Sep 16, 2020 at 6:30 AM ROLAND HOWELL via TenTec <
> tentec at contesting.com> wrote:
>
>>
>> Hi all
>>
>> Some progress on the above radio, voltages are very close to what the
>> manual states, but still no TX.
>>
>> What should i see from the mixer board RF connector, i dont appear to
>> see output drive on my Fluke meter feeding the RF amp?.
>>
>> Found a leaky cap on the control board, all changed for the next range
>> higher working and 105 degree working types.
>>
>> Also found a mini relay 'hot melt glued' to a board, this had 2 x TX
>> voltages wires (yellow) attached, or should have been, the soldering had
>> not been done and the wires had broken free from the pins on the relay,
>> the control wire was also soldered to the TX line, so cant see what it
>> was supposed to do, i removed it and re-instated the wires correctly,
>> unfortunately that didn't help the lack of TX.
>>
>> thanks to all for comments so far, keep them coming please.
>>
>> thanks
>>
>> 73
>>
>> Snowy G0HZE
>> _______________________________________________
>> TenTec mailing list
>> TenTec at contesting.com
>> http://lists.contesting.com/mailman/listinfo/tentec
>>
>
>
> ------------------------------
>
> Message: 3
> Date: Wed, 16 Sep 2020 10:06:40 -0700
> From: Josh Gibbs <gibbsjj at gmail.com>
> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
> Subject: Re: [TenTec] ARGOSY 2
> Message-ID:
> <CAGCptuyq-CXkzb4wYNYNEuL4VJHND=HXyck_ar4cDu17khj4Bg at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> The ARGOSY 2 looks very similar to the Century 22 I recently picked up.
> Nice looking rig.
>
> My C22 wouldn't TX when I first got it. It turned out to be bad connections
> between the boards. I cleaned up all the connectors on the boards / the
> small jumpers with Deoxit, and BINGO she came back to life and has been
> working ever since.
>
> Good luck!
>
> -Josh WU7H
>
>
> ------------------------------
>
> Message: 4
> Date: Wed, 16 Sep 2020 18:31:03 +0100 (BST)
> From: ROLAND HOWELL <snowy.howell at btinternet.com>
> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
> Subject: Re: [TenTec] ARGOSY 2
> Message-ID: <57651ea9.1312.17497f84355.Webtop.95 at btinternet.com>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
>
> Hi Ken/Josh
>
> Thanks for the input, you are right i was using my Fluke dmm, i will
> check with my scope later tonight.
>
> Have cleaned a great many number of connectors ( Molex?) with Detoxit,
> will being doing the pots and band/mode switches at the same time.
>
> Thanks for your input
>
> Snowy
>
>
> ------ Original Message ------
> From: "Ken Brown" <kenradiobrown at gmail.com>
> To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
> Sent: Wednesday, 16 Sep, 20 At 18:06
> Subject: Re: [TenTec] ARGOSY 2
> What kind of Fluke meter are you using? Are you expecting to measure RF
> voltage with it? If a regular Fluke DMM you can reasonably expect to
> measure DC collector voltages and DC base bias voltages, but it is not
> really the right instrument to measure RF drive voltage. You'd be better
> off trying to make those measurements with an oscilloscope, preferably
> with
> a 10X probe so the circuit loading is around 10 Megohms and only a few
> picofarads. Or you could use a HF AC VTVM or FET VM that has the
> rectifier
> built into the probe.
> DE N6KB
> On Wed, Sep 16, 2020 at 6:30 AM ROLAND HOWELL via TenTec <
> tentec at contesting.com> wrote:
>
> Hi all
> Some progress on the above radio, voltages are very close to what the
> manual states, but still no TX.
> What should i see from the mixer board RF connector, i dont appear to
> see output drive on my Fluke meter feeding the RF amp?.
> Found a leaky cap on the control board, all changed for the next range
> higher working and 105 degree working types.
> Also found a mini relay 'hot melt glued' to a board, this had 2 x TX
> voltages wires (yellow) attached, or should have been, the soldering had
> not been done and the wires had broken free from the pins on the relay,
> the control wire was also soldered to the TX line, so cant see what it
> was supposed to do, i removed it and re-instated the wires correctly,
> unfortunately that didn't help the lack of TX.
> thanks to all for comments so far, keep them coming please.
> thanks
> 73
> Snowy G0HZE
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
> <http://lists.contesting.com/mailman/listinfo/tentec>
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
> <http://lists.contesting.com/mailman/listinfo/tentec>
>
>
>
> ------------------------------
>
> Message: 5
> Date: Wed, 16 Sep 2020 13:33:08 -0400
> From: Mike Bryce <prosolar at sssnet.com>
> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
> Subject: Re: [TenTec] ARGOSY 2
> Message-ID: <7329E344-0DE5-4DD3-83BE-98CF87CC2436 at sssnet.com>
> Content-Type: text/plain; charset=utf-8
>
> If you don?t have a ?scope, a RF probe would be the next best thing. Lacking, that a short hunk of wire into a second receiver should sniff enough rf that you should be able to hear any increase in signal.
>
> But that being said, probe the base of the finals/drivers and see if there is RF
> Is the PA drawing current but no RF?
> You do have the Drive up all the way?
>
> Make sure you have the ?T? voltages and bias to the PA
>
>
> Mike, WB8VGE
> SunLight Energy Systems
> The Heathkit Shop
> http://www.theheathkitshop.com/
> J e e p
> o|||||||o
>
> A man with one clock knows what time it is. A man with two clocks is never sure.
>
>>
>>>
>>> Hi all
>>>
>>> Some progress on the above radio, voltages are very close to what the
>>> manual states, but still no TX.
>>>
>>> What should i see from the mixer board RF connector, i dont appear to
>>> see output drive on my Fluke meter feeding the RF amp?.
>>>
>>> Found a leaky cap on the control board, all changed for the next range
>>> higher working and 105 degree working types.
>>>
>>> Also found a mini relay 'hot melt glued' to a board, this had 2 x TX
>>> voltages wires (yellow) attached, or should have been, the soldering had
>>> not been done and the wires had broken free from the pins on the relay,
>>> the control wire was also soldered to the TX line, so cant see what it
>>> was supposed to do, i removed it and re-instated the wires correctly,
>>> unfortunately that didn't help the lack of TX.
>>>
>>> thanks to all for comments so far, keep them coming please.
>>>
>>> thanks
>>>
>>> 73
>>>
>>> Snowy G0HZE
>>> _______________________________________________
>>> TenTec mailing list
>>> TenTec at contesting.com
>>> http://lists.contesting.com/mailman/listinfo/tentec
>>>
>> _______________________________________________
>> TenTec mailing list
>> TenTec at contesting.com
>> http://lists.contesting.com/mailman/listinfo/tentec
>>
>
>
>
> ------------------------------
>
> Message: 6
> Date: Wed, 16 Sep 2020 20:54:29 +0100 (BST)
> From: ROLAND HOWELL <snowy.howell at btinternet.com>
> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
> Subject: Re: [TenTec] ARGOSY 2
> Message-ID: <11495002.1529.174987b92fd.Webtop.88 at btinternet.com>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
>
> Hi Mike
>
> Thanks for your input.
>
> I scoped the rf output from the mixer, nothing shown, so the fault would
> appear to be on that board.
>
> Took the board out, detoxit all the pins on the multitude of connectors,
> looked for dry joints, found D1-2 shorted, (1n4148's) so i replaced the
> other 2 whilst i was in there.
>
> Refitted mixer back into the radio but no change, never expected to find
> the fault that easily hi hi.
>
> I have TX volts going to the PA but NO current drawn and 13+ volts on
> the PA board, one thing i did notice was the alc led was lit every time
> i put the radio into tune, adjusting the drive pot didn't alter that at
> all, could that have anything to do with it?.
>
> hope i haven't bored you.
>
> Regards
>
> Snowy G0HZE
> ------ Original Message ------
> From: "Mike Bryce" <prosolar at sssnet.com>
> To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
> Sent: Wednesday, 16 Sep, 20 At 18:33
> Subject: Re: [TenTec] ARGOSY 2
> If you don?t have a ?scope, a RF probe would be the next best thing.
> Lacking, that a short hunk of wire into a second receiver should sniff
> enough rf that you should be able to hear any increase in signal.
> But that being said, probe the base of the finals/drivers and see if
> there is RF
> Is the PA drawing current but no RF?
> You do have the Drive up all the way?
> Make sure you have the ?T? voltages and bias to the PA
>
> Mike, WB8VGE
> SunLight Energy Systems
> The Heathkit Shop
> http://www.theheathkitshop.com/ <http://www.theheathkitshop.com/>
> J e e p
> o|||||||o
> A man with one clock knows what time it is. A man with two clocks is
> never sure.
>
> Hi all
> Some progress on the above radio, voltages are very close to what the
> manual states, but still no TX.
> What should i see from the mixer board RF connector, i dont appear to
> see output drive on my Fluke meter feeding the RF amp?.
> Found a leaky cap on the control board, all changed for the next range
> higher working and 105 degree working types.
> Also found a mini relay 'hot melt glued' to a board, this had 2 x TX
> voltages wires (yellow) attached, or should have been, the soldering had
> not been done and the wires had broken free from the pins on the relay,
> the control wire was also soldered to the TX line, so cant see what it
> was supposed to do, i removed it and re-instated the wires correctly,
> unfortunately that didn't help the lack of TX.
> thanks to all for comments so far, keep them coming please.
> thanks
> 73
> Snowy G0HZE
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
> <http://lists.contesting.com/mailman/listinfo/tentec>
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
> <http://lists.contesting.com/mailman/listinfo/tentec>
>
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
> <http://lists.contesting.com/mailman/listinfo/tentec>
>
>
>
> ------------------------------
>
> Message: 7
> Date: Thu, 17 Sep 2020 06:56:40 -0400
> From: Greg Breeden <al0apsk31 at gmail.com>
> To: Discussion of Ten-Tec Equipment <TenTec at contesting.com>
> Subject: [TenTec] FS: Ten Tec 238B Tuner
> Message-ID:
> <CABzvZxBOw8vXV_Zwu7oyBmU605MYaRSPgS2_Q167LhjPAGvJSg at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> Group,
>
> I have a 238b Tuner FS. It is a "10" electrically and mechanically. I have
> never ran it QRO.
>
> It does have light scuffs/scratches on the top and bottom covers (nothing
> unsightly) but the Front Panel is clean.
>
> I don't have a manual for it but those are downloadable.
>
> $300 shipped to lower 48. Please respond to my email directly.
>
> Greg, AL0A
>
>
> ------------------------------
>
> Message: 8
> Date: Thu, 17 Sep 2020 13:36:11 +0100 (BST)
> From: ROLAND HOWELL <snowy.howell at btinternet.com>
> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
> Subject: [TenTec] argosy 2
> Message-ID: <3c795a9b.20ac.1749c10a6be.Webtop.93 at btinternet.com>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
>
> Hi All
>
> Just ask me who is a pleased person now, well more pleased than i was ha
> ha.
>
> The lack of out put from the mixer board was due to the ALC circuit
> being on all the time, that was the incorrect FET fitted and it failed,
> so now i have output signal on terminal 39, still no RF but at least i
> am now able to set the driver bias, no final bias showing so more work
> to do.
>
> Thanks to all that are assisting with this problem
>
> Stay well and healthy
>
> Snowy G0HZE
>
>
> ------------------------------
>
> Message: 9
> Date: Thu, 17 Sep 2020 09:25:56 -0400
> From: Mike Bryce <prosolar at sssnet.com>
> To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
> Subject: Re: [TenTec] argosy 2
> Message-ID: <68291481-7592-412B-A379-75B100A64A66 at sssnet.com>
> Content-Type: text/plain; charset=utf-8
>
> snowy,
>
> do you have signal now on the base of the PA driver transistors?
>
> do you have a low drive source such as a qrp transceiver? Or a signal generator?
> if you do, you can disconnect the input to the pa and squirt in some rf from the external drive, a half of watt would be fine, and if the PA works, you?ll see a gain of power.
> remember if you do this test, the argosy must be in TX condition.
>
> mike wb8vge
>
> ?The trouble with quotes on the Internet is that you never know if they are genuine?
>
> ?Abraham Lincoln
>
>> On Sep 17, 2020, at 8:36 AM, ROLAND HOWELL via TenTec <tentec at contesting.com> wrote:
>>
>>
>> Hi All
>>
>> Just ask me who is a pleased person now, well more pleased than i was ha ha.
>>
>> The lack of out put from the mixer board was due to the ALC circuit being on all the time, that was the incorrect FET fitted and it failed, so now i have output signal on terminal 39, still no RF but at least i am now able to set the driver bias, no final bias showing so more work to do.
>>
>> Thanks to all that are assisting with this problem
>>
>> Stay well and healthy
>>
>> Snowy G0HZE
>> _______________________________________________
>> TenTec mailing list
>> TenTec at contesting.com
>> http://lists.contesting.com/mailman/listinfo/tentec
>>
>
>
>
> ------------------------------
>
> Message: 10
> Date: Thu, 17 Sep 2020 09:39:33 -0400
> From: Greg Breeden <al0apsk31 at gmail.com>
> To: Discussion of Ten-Tec Equipment <TenTec at contesting.com>
> Subject: [TenTec] FS: Ten Tec 238b tuner
> Message-ID:
> <CABzvZxBS+bNwqiqkHmwUGgo6t8c-A7qnkg7CH788P+WxvV+4fA at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> Group,
>
> I have a 238b Tuner FS. It is a "10" electrically and mechanically. I have
> never ran it QRO.
>
> It does have light scuffs/scratches on the top and bottom covers (nothing
> unsightly) but the Front Panel is clean.
>
> I don't have a manual for it but those are downloadable.
>
> $300 shipped to lower 48. Please respond to my email directly.
>
> Greg, AL0A
>
>
> ------------------------------
>
> Subject: Digest Footer
>
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
>
> ------------------------------
>
> End of TenTec Digest, Vol 213, Issue 9
> **************************************
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