This story has a happy ending.
The VFO encoder that I need arrived from Newark but I didn’t use it. Turns out
that Ten Tec had the exact replacement part in stock so I ordered a VFO encoder
from them. It showed up yesterday and I installed it last evening. The new part
brought the VFO back to life. After some performance testing I put the radio on
the air this evening and made a contact with Ray (KB5PX) in Louisiana. Ray gave
me a good signal report despite the dense contesting traffic up and down the
75m band.
I’d say that this radio is good to go and ready to return to the Radio Museum.
Ripley
Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10
________________________________
From: TenTec <tentec-bounces@contesting.com> on behalf of Bob Ripley
<bob_ripley@hotmail.com>
Sent: Thursday, November 9, 2017 10:52:04 AM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] Replacement VFO encoder for TT Jupiter
No sir, I have not tried that.
Ripley
Sent from my iPhone. Errors and all.
On Nov 9, 2017, at 10:41 AM, Fernando
<n2fq@sbcglobal.net<mailto:n2fq@sbcglobal.net>> wrote:
Thank you so much for the update Ripley.
Sounds like you’ve done an extraordinary amount of troubleshooting.
Kudos to you.
Are you able to use the rig in Pegasus Emulation Mode?
Something of the likes N4PY rig control?
Fernando N2FQ/6
n2fq@sbcglobal.net<mailto:n2fq@sbcglobal.net>
On Nov 8, 2017, at 8:09 PM, Bob Ripley
<bob_ripley@hotmail.com<mailto:bob_ripley@hotmail.com>> wrote:
Hello Fernando,
This radio that was donated to us is said to have taken a lighting strike and
had/has multiple problems. The persons that worked on it before me fixed the
power supply protection circuit but when you turned it the transceiver was
receiving and transmitting at the same time. Not good. They tried a couple of
things but gave up.
Since joining the staff at the Museum I was asked to look at this radio. After
a few hours of bench time I isolated the “always transmitting” issue down to
the ADS micro-controller on the LOGIC/DSP card and replaced that 128 pin
surface mount beauty with its replacement that arrived in the mail today. The
new chip fixed that problem but not the VFO issue. Channel B on the encoder is
fine but channel A is at Vcc level.
I was finally able to see the marking hidden by the ribbon cable and the
encoder that I need is a HRPG-ASAC#17F made by Avago. This particular encoder
is a non stock item from about everyone (minimum order 150 units and a 14 week
delivery). I did find a similar encoder from the same manufacturer at Newark
Electronics in the UK. This encoder has a cable instead of pins for a front
mount circuit board application but I believe that I can adapt it for my needs.
The encoder is about $40.00 and I should receive it in about a week to ten days.
Right now the radio works except for the VFO. 100 watts out on CW, auto antenna
tuner works, all of the front panel buttons seam to operate correctly and all
of the other encoders work fine. This evening I found and fixed a problem with
the PTT line. Turned out to be an open diode on the LOGIC/DSP board but then
discovered that the ratty Ten Tec hand mic that they gave me to test this radio
is bad or has a broken wire to the microphone element itself. I will check that
out tomorrow.
Ripley
KD8UYQ
Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10
________________________________
From: TenTec
<tentec-bounces@contesting.com<mailto:tentec-bounces@contesting.com>> on behalf
of Fernando <n2fq@sbcglobal.net<mailto:n2fq@sbcglobal.net>>
Sent: Wednesday, November 8, 2017 10:15:14 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] Replacement VFO encoder for TT Jupiter
Sad news.
One way to find a replacement is to get any info from the one
in the radio.
A search on the parts list yielded this: encoder hrpg
A google search shows than Mouser has one for $32.
A prudent thing to do is to ascertain that is what is written
on the old one before ordering. Less than that I think the
only thing else to do is remove the old one and try to match
its characteristics with what is available.
A long shot would be to contact Ten Tec.
A have two Jupiters here and very interested in how you
fair out. Let us know.
73
Fernando N2FQ/6
n2fq@sbcglobal.net<mailto:n2fq@sbcglobal.net>
On Nov 8, 2017, at 12:56 PM, Bob Ripley
<bob_ripley@hotmail.com<mailto:bob_ripley@hotmail.com>> wrote:
Hello there.
It looks the VFO encoder on our Jupiter has gone south. Spin the knob all that
you want and nothing happens the same is true when the MENU screen is pulled
up. Anyone know where I can get a replacement Encoder for this transceiver.
Thank you in advance for your response.
Bob Ripley
KD8UYQ
Museum of Radio and Technology
Huntington, WV
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