Re: PA Country Of Origin
You know the bogus parts also say Icom, right?
A supplier like RF Parts is very trustworthy, obviously, but if the same part can be ordered from Icom, maybe just to be sure of getting a good part you
By
Ken N2VIP
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#84630
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Re: TR-4 Decreased Sensitivity on High Bands
Hi Gary,
I checked this morning and I'm getting the following:
80M : 70W, XMTR GAIN saturation point is at 9:30 o'clock
20M : 50W, XMTR GAIN saturation point is at 9:30 o'clock
These are both
By
n4buq
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#84629
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Re: PA Country Of Origin
Try RF Parts.com. They have tons of Mitsubishi modules.
Terry- WB0VQP
[email protected]> wrote:
By
Terry WB0VQP
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#84628
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Re: PA Country Of Origin
Hi Ron,
I thought I would pop in my 2 cents worth on this subject. I have repaired a few of these modules in the past, and I have also ordered replacements from Aliexpress without any issues but
By
Clint VE3CMQ
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#84627
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Re: PA Country Of Origin
GM, for a module replacement work I acquired an "original" part, "guaranteed", from a local seller, the end result was it was indeed an "original" part but refurbished ..
So bad done also (I took
By
Willy - LU5WE
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#84626
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Re: PA Country Of Origin
See: https://www.rfparts.com/sc1091.html
[image: image.png]
Seems it's now the $97.91 question.
73 de Andrew/N5ASE
[email protected]> wrote:
By
Jahman N5ASE
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#84625
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Re: PA Country Of Origin
Ron,
I don't have an answer for you, just a related thought:
I have an Icom IC-2100H that has effectively zero RF output, I got it as a parts radio for another IC-2100H that had a scratchy volume
By
Ken N2VIP
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#84624
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PA Country Of Origin
This is a bit off topic in some ways, in others it's something we have tossed around recently.
I have an Icom repeater that appears to have a failed PA module, it draws 10 amps and has an output of 1
By
Ron Magnus
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#84623
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Re: Another TR7 Journey begins
It¡¯s 40 meters but yes I¡¯m guessing there¡¯s a problem with the switch section.
By
Bill NZ0T
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#84622
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Re: TR-4 Decreased Sensitivity on High Bands
The reason I ask the questions about 80 vs 20 output is that, on these two bands, the injection coupling coils do not matter at all since they are out of the circuit altogether on those two
By
Gary Follett
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#84621
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Re: Another TR7 Journey begins
You may be making contact with the 5 MHz section and hearing stuff through it. My guess is you either have a fault in the 40M section or one of the switch contacts for 40M needs attention. If you
By
Jim Shorney
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#84620
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Re: TR-4 Decreased Sensitivity on High Bands
How much weaker is output on 20 meters compared with 80 meters?
Gary
W0DVN
By
Gary Follett
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#84619
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Re: Another TR7 Journey begins
Wiring is fine.? I discovered if I turned the bandswitch knob in between the detents for 7 and 5 MHz which is even with the yellow 7 on the inside ring that 40 meters works OK.? ?All other bands
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Bill NZ0T
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#84618
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Re: Another TR7 Journey begins
Update:? I unsoldered the high current PA load wire so I could work on the receiver without the transmitter issue.? I have managed to get the 40 MHz, 13.695 MHz and? 8.05 MHz oscillators set
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Bill NZ0T
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#84617
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Re: TR-4 Decreased Sensitivity on High Bands
Two minor clarifications:
The cap across the neutralizing variable cap allows me to set a proper null so that the variable cap can swing through that at about the point where the rotor is meshed
By
n4buq
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#84616
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Re: TR-4 Decreased Sensitivity on High Bands
Gary,
This morning, as I tuned up (into a dummy load) across all bands and I noticed that the XMTR GAIN seems to saturate at about the same point for all bands. I seem to recall that a few weeks ago
By
n4buq
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#84615
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Re: R7 parent board pin out
Thanks.... I missed your answer about board compatibility.
Sorry, I don't mean to be a pest.
Thanks for all your help.
73, Dan (W3DF)
[email protected]> wrote:
By
Daniel W3DF
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#84614
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DRAKE USERS NET 7.238 MHZ.
Evan, K9SQG was our NCS for the Sunday Users net. There were 22 people checking into the net, and the users were using the following radios:
A line: ?1
B line: ?1
C line: ?3
TR-4: ?4
TR-5:
By
Mark - WB0IQK
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#84613
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Re: TR-4 Decreased Sensitivity on High Bands
Both, actually.
Steve Wedge, W1ES
Time flies like an arrow. Fruit flies like a banana.
Sent from [Proton Mail](https://proton.me/mail/home) for iOS
By
Steve Wedge, W1ES/4
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#84612
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Re: R7 parent board pin out
One again, yes. The two boards are interchangeable. However as I have already stated you will want to change all the small electrolytics from the output of the TDA2002 to the output of the
By
Jim Shorney
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#84611
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