I just finished repairing a Jupiter for that same problem. Both the 160M and
10/24 M bands had no transmit output. The problem was the HASCO relays on
the LPF module on those two bands. The coils were open and can be checked
with DVM or multimeter for continuity. The relays are very inexpensive and
available from Ten-Tec for $2.00 each. Paul suggested I replace all 15
however only 14 are the HASCO type and the 15th one is what appears to be
reed relay. Check the input to the LPF board with an oscilloscope. The input
signals were there on the one I repaired on all the band inputs but no
output from the filters on the faulty bands.
Good luck,
Duane KF4ZS
-----Original Message-----
From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com]
On Behalf Of Karl Heimbach
Sent: Sunday, February 12, 2012 11:53 AM
To: tentec@contesting.com
Subject: [TenTec] Jupiter - No transmit power output 10 meters
All,
I will also post this to the Jupiter group, but seems I have no power
output on 10 meters. I can see amps being pulled on the power supply
when the key is brought up or mike button pressed, but there is no
output power. If memory serves me correctly, this has been reported on
17 meters (and perhaps other bands too). Receive is not effected.
Other bands operate normally. Do I have a bandpass filter or relay
failure? It appears specific to 10 meters.
Thanks,
Karl - W5QJ
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