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@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@btinternet.com>
> To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
> Subject: [TenTec] ARGOSY 2
> Message-ID: <220e10fa.1144.17497c0951b.Webtop.82@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@gmail.com>
> To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
> Subject: Re: [TenTec] ARGOSY 2
> Message-ID:
> <CAGnjFf=xaecmRi0huYK_M1w0zjCqpPodX66hqHmtTtardGfX9A@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@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@contesting.com
>> http://lists.contesting.com/mailman/listinfo/tentec
>>
>
>
> ------------------------------
>
> Message: 3
> Date: Wed, 16 Sep 2020 10:06:40 -0700
> From: Josh Gibbs <gibbsjj@gmail.com>
> To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
> Subject: Re: [TenTec] ARGOSY 2
> Message-ID:
> <CAGCptuyq-CXkzb4wYNYNEuL4VJHND=HXyck_ar4cDu17khj4Bg@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@btinternet.com>
> To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
> Subject: Re: [TenTec] ARGOSY 2
> Message-ID: <57651ea9.1312.17497f84355.Webtop.95@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@gmail.com>
> To: "Discussion of Ten-Tec Equipment" <tentec@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@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@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
> <http://lists.contesting.com/mailman/listinfo/tentec>
> _______________________________________________
> TenTec mailing list
> TenTec@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@sssnet.com>
> To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
> Subject: Re: [TenTec] ARGOSY 2
> Message-ID: <7329E344-0DE5-4DD3-83BE-98CF87CC2436@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@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/tentec
>>>
>> _______________________________________________
>> TenTec mailing list
>> TenTec@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@btinternet.com>
> To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
> Subject: Re: [TenTec] ARGOSY 2
> Message-ID: <11495002.1529.174987b92fd.Webtop.88@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@sssnet.com>
> To: "Discussion of Ten-Tec Equipment" <tentec@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@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
> <http://lists.contesting.com/mailman/listinfo/tentec>
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
> <http://lists.contesting.com/mailman/listinfo/tentec>
>
> _______________________________________________
> TenTec mailing list
> TenTec@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@gmail.com>
> To: Discussion of Ten-Tec Equipment <TenTec@contesting.com>
> Subject: [TenTec] FS: Ten Tec 238B Tuner
> Message-ID:
> <CABzvZxBOw8vXV_Zwu7oyBmU605MYaRSPgS2_Q167LhjPAGvJSg@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@btinternet.com>
> To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
> Subject: [TenTec] argosy 2
> Message-ID: <3c795a9b.20ac.1749c10a6be.Webtop.93@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@sssnet.com>
> To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
> Subject: Re: [TenTec] argosy 2
> Message-ID: <68291481-7592-412B-A379-75B100A64A66@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@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@contesting.com
>> http://lists.contesting.com/mailman/listinfo/tentec
>>
>
>
>
> ------------------------------
>
> Message: 10
> Date: Thu, 17 Sep 2020 09:39:33 -0400
> From: Greg Breeden <al0apsk31@gmail.com>
> To: Discussion of Ten-Tec Equipment <TenTec@contesting.com>
> Subject: [TenTec] FS: Ten Tec 238b tuner
> Message-ID:
> <CABzvZxBS+bNwqiqkHmwUGgo6t8c-A7qnkg7CH788P+WxvV+4fA@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@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
>
> ------------------------------
>
> End of TenTec Digest, Vol 213, Issue 9
> **************************************
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