Table of transmitter status

23may15

   
The status table shows what we've done and problems we've had while debugging the transmitters:
The The status table shows what we've done and some of the problems we've had while debugging the xmiters. The links take you to more info..
Abbreviations and color has been used to identify some tasks

date
tx1
tx2
tx3
tx4
tx5
tx6
150504

TRB no pwr out
(link)

BB on load
(link)


150506
BB on Antenna
(link)


BB on load.No Bursts
(link)


150507
TRB burned dmyLd





150508
TRB burned dmyLd




150512
CC
(link)

CC not complete
TRB dmyLd trip at
50KW
 (link)
CC
(link)


150514





tx6 on ant. to 28KW
150518


MC
(link)



150519



MC
(link)
pwrMeter bad
replaced
MC
(link)
AT9 attn bad
replaced
150520
TRB +15V cardA2
3V pkTPk ac ripple
16.4V DC
TRB 26V pwrSup
no output card A2
ok 21may15..




150521

MC
(link)
26V supply started
working again




150522




MC (link)
TRB DmyLd
LowPwr drvrStage
(link)
CC
(link)
BB- dmyLd none seen
(link)
150526
MC
(link)
15V supply with ripple
replaced

TRB:
15V supply bad
10V dc, 3V ac ripple




150527





xmit 100KW on ant
(link)
150602
xmit 100 KW on ant
(link)


TRB:wouldn't complete
filament delay

xmit 100KW on ant
measure harmonics 430
(link)
150603


xmit 100KW on ant
no bursts
(link)
TRB: tripped at 24KW
reflected power
arcing at top of antenna
(link)


150610

TRB:dmyld
drvr A ac flt at 48Kw
saw jmp ipa output


TRB: dmyld
tripped at 70KW
saw drvanode osc prior
to trip

150611



on dmyLd, 60 to 90KW
for 1 hr, no bursts
TRB: tripped drv A ac at
95KW


150623



on dmyLd to 93KW
CC
TRB:tripped PA A dc
needed 4db extra drv pwr.
after trip drv pwr back to normal


150618
first light daytime tx 1,3,6
150619
first light nightime tx 1,3,6
150623



TRB: found loose connectors on back of broadband amp (for multiple transmitters).
CC .. but ignored data


150629

TRB:  dmyld
drv A AC flt at 20kw

on dmyld to 95 Kw, no trips
CC



150811

CC

TRB: Burst water pipe

150909




TRB: IPA tube not outputing much power.
150915

on antenna run for 20 min.
at 75kw

TRB: on antenna. arcing

on ant. run for 20min at
75kw
150916



on dmyld
CC
Dana VNA meas of heliax and dipole showing damage
on dmyld
CC


150922



heliax repaired.
dana remeasures vswr


151008



TRB: no PA output. Problem was pneumatic valve.


151013



100KW output on ant 3B for 30minutes with no glitches


151015
60Kw on ant
60Kw on ant trouble coming up
rfi

60Kw on ant. drive needed 5db higher. Then drive needed dropped back to other tx levels
wouldn't come up
60Kw on ant
151019


vswr on ant

vswr on ant

151020


on dmyld

on dmyld
crowbar

151021


balun vna
dmyLd tripped scrn @ 60Kw

90Kw dmyLd for 30 min. recorded stage outputs.

151022
85Kw on ant
drvAC A flt @40Kw on Ant

85Kw on ant
85 Kw on ant
ipa,drv grid I meter pegged
151026


ipa glitch
@40KW

crowbar

151028


88KW on dmyLd

hvon, no  crowbar.
recorded meter values with no rf.

160913





rogowski coil
td 8 cable

160920
lcp,rcp Ph
8Mhz




lcp,rcp Ph
8Mhz
lcp,rcp Ph
8Mhz
170504
first hf test after new support cable insulators installed on 5 MHz dipoles