Hi Tim,
When I search eBay for FT-101 meter I get about 10 results for S meters including one for $16 delivered. Item # 114863571802 .
Before putting in a good meter suggest checking the IC current measurement section resistors first.
73
Roger VE7LB
|
?
Roger,
?
Yes, I agree I have to check the circuit before
replacing the meter and destroying a new meter.
I will search ebay again and see if I can find the item
you mention.
Thanks
?
Tim Brown, WB2PAY,
Licensed since
1962
?
?
toggle quoted message
Show quoted text
Hi Tim, When I search eBay for FT-101 meter I get about 10 results
for S meters including one for $16 delivered. Item # 114863571802 . Before
putting in a good meter suggest checking the IC current measurement section
resistors first. 73 Roger VE7LB
|
Hi
I have been given an FT101E in very good condition, but it has a fault on receive, here are the symptoms:
Picking up stations, but when the RF gain is turned up the signal becomes unstable and oscillates.
Can anyone suggest where the fault may be?
Steve G4AQB
|
Re: FT-101E Receive Fault
Gidday Steve,
The paired finals possibly need neutralizing.
Search the files folder for instructions
73 de VK2CAO
|
Re: FT-101E Receive Fault
Steve
the RF gain circuit is connected to PC 1181 - MJ(1), PB 1183 -MJ(3), PB 1582- MJ(7). Check the voltage chart. pg 4-17
Emerson PP6EW
Em qua., 8 de set. de 2021 às 01:14, Steve < steve@...> escreveu:
Hi
I have been given an FT101E in very good condition, but it has a fault on receive, here are the symptoms:
Picking up stations, but when the RF gain is turned up the signal becomes unstable and oscillates.
Can anyone suggest where the fault may be?
Steve G4AQB
|
Re: FT-101E Receive Fault
Hi Noel, The fault is only on receive, I have not tried to transmit yet.? I have found the info about neutralization, but not sure how this affects receive only. Steve G4AQB ? Sent from for Windows ?
|
Re: FT-101E Receive Faulty
Well, if one or both power tubes are slightly oscillating from poor neutralization, your receiver could hear it as a carrier or the bizarre harmonics from that oscillation could also leak into your audio chain somehow.?
|
Noticed recently my receive was dying? My 101 s meter doesnt move unless its a real strong? signal? I notice a signal from someone giving me maybe 2 s units and my other rig shows 10 S units? What should I be looking into . Any help is appreciated
|
Since it is a fast acting event... the?first thing I would do is replace the receive first RF amp.?
Q1 dual gate mosfet.?
3N211 transistors are still easy to find.?
But any decent, four leg dual gate mosfet
of that ilk.. will tell you if it’s bad.?
I doubt the receive line fuse is blown, as others might suggest.?
|
Fox Tango Corp. 89H2.1 IF Filter Specification and Installation Information and Schematic Needed: filter installed in an FT-101ZD Mk 0
I have found that a Fox Tango Corp. 89H2.1 IF filter has previously been installed in a used FT-101ZD Mk 0 that I purchased. ?I have no documentation for this installation, and cannot find any?on the internet.? The original Yaesu SSB filter was left mounted on the PB-1963B UNIT (IF board) and the Fox Tango filter mechanically attached to the Yaesu filter case with copper foil tape.? A small PCB; with what looks like a transistor, a resistor, fixed capacitors, a variable capacitor, and inductor; is mounted with double sided tape atop the Fox Tango filter; I assume this is for impedance matching and possibly an amplifier. ?A small gauge red/white wire has been run from underneath the PCB through a mounting hole for the presently empty CW filter space, to the small PCB. ?(I expect that?this wire will need to be rerouted to properly install a CW filter.) ?Coaxial “jumpers” were connected from the Fox Tango filter I/O to test pins atop the IF board. ?
Do you have any information concerning this Fox Tango filter installation-modification, so I can clarify the functionality (either impedance matching or amplifier, or both) of the small circuit atop the filter, and for reference when needed, to understand exactly what has been done? ?In general, I understand an SSB 2.1 KHz wide (@ -6 dB?) IF bandpass (crystal ?) filter has been installed, while I would like to understand why the original filter was left in the radio. ?Is the original SSB filter still functioning in the radio? ?Also, I would like to know insertion loss and all specifications of this 2.1 KHz IF filter. ?A filter response curve plot would be great, expecting that to accompany the written specifications.??The schematic, installation instructions, and filter specifications documentation would clarify, and answer my questions.
Does the variable bandwidth control still function as described in the Yaesu instruction manual, with exception to the maximum bandwidth? ?It is a mystery to me why the original filter was left in the radio, unless it is cascaded with the Fox Tango Corp. filter. ?Is the original SSB IF filter functional in the radio, or has it been electrically isolated and left mounted on the IF board? ?Does anyone have actual experience with using the Fox Tango 2.1 KHz IF filter in operation with the FT-101ZD
who could qualitatively comment on its effectiveness and performance?
Thank you.
|
Yaesu XF8.9HC 600 Hz IF Filter for CW Mode in an FT-101ZD
I’m looking for a Yaesu XF8.9 HC IF filter for the FT-101ZD in excellent, like new, or new condition.
Thank you.
73, Michael Smith N4KZO
|
Cabinet Cover Screws for an FT-101ZD
Having misplaced the eight top cover screws, I am looking for a set of cabinet cover screws for a Yaesu FT-101ZD transceiver. The screws are cadmium plated steel metric, 3 mm diameter, 0.5 thread pitch, Phillips pan head painted a dark gray, of length 5 mm fully threaded. I would like the gray painted screw heads to match the original cabinet paint.
Thank you.
73, Michael Smith N4KZO
|
The best test will be replace the high frequency module PB1181. Year ago I saw an exotic problem, the R13 off 1k was damaged or with wrong resistance. A good idea is measure voltage over transistors leads. pg 5-12 good luck
Emerson PP6EW
|
Re: Fox Tango Corp. 89H2.1 IF Filter Specification and Installation Information and Schematic Needed: filter installed in an FT-101ZD Mk 0
Hi Michael,
Take a look in the Files section and open the old Fox Tango Newsletters pdf. Do a search for "Filter". These page number entries came up under FT-101ZD: 7942, 8233 & 8213. There are others as well but these are the first three.?
You will find 7942 (Year 1979 page 42) in the pdf at page 477 (of 1292 pages). This looks like what you are looking for. If not just keep searching.
73
Roger VE7LB
|
Re: Cabinet Cover Screws for an FT-101ZD
I see them on eBay frequently.?
On Wed, Sep 15, 2021 at 12:25 PM Michael Smith via <tw8kcabpilot= [email protected]> wrote: Having misplaced the eight top cover screws, I am looking for a set of cabinet cover screws for a Yaesu FT-101ZD transceiver.? The screws are cadmium plated steel metric, 3 mm diameter, 0.5 thread pitch, Phillips pan head painted a dark gray, of length 5 mm fully threaded.? I would like the gray painted screw heads to match the original cabinet paint.
Thank you.
73, Michael Smith N4KZO
|
Re: Fox Tango Corp. 89H2.1 IF Filter Specification and Installation Information and Schematic Needed: filter installed in an FT-101ZD Mk 0
Thanks Roger. ?How do I get to the Files section?
73,
Michael
|
Re: Fox Tango Corp. 89H2.1 IF Filter Specification and Installation Information and Schematic Needed: filter installed in an FT-101ZD Mk 0
Assuming you are using a PC log into the web page /g/Yaesu-FT-101.
You will find the Files section near the bottom of the left pane.
|
FT-101ZD MK0, Series 05: 12 Volt D.C. Power Supply Tolerance
Does any one know the tolerance for the 12 VDC power supply? ?With the transformer set to 117 VAC (noted on the rear panel), the 12 VDC buss measures 11.77 VDC at the Lever Switch Unit PB-1975 (NO. 20) S01 (input, brown wire), D.C. supply to the noise blanker.
Thank you.
73,
Michael Smith
|
I think my BM adjustment was inadvertently changed when adjusting the ALC.? They are next to each other.? I couldn't find anything about this adjustment in the user or repair manuals.? Can any help me make sure the BM adjustment is set correctly?
On a different topic.? I have an FT-101B that I used back in the 70s.? It has been sitting in a box for maybe 40 years.? I started it up using a variac and bringing the voltage up slowly.? It is clear from noise in various controls and switches that there are dirty of corroded contacts.? Is it advisable to spray contact cleaner on noise controls and, if so, what is the correct way to do this?
It does send and receive.
I look forward to and appreciate any assistance on these two matters.
Thanks,
--Kenoli
KB6EMG
|
Em sábado, 25 de setembro de 2021 22:40:00 BRT, Kenoli Oleari <kenoli@...> escreveu:
I think my BM adjustment was inadvertently changed when adjusting the ALC.? They are next to each other.? I couldn't find anything about this adjustment in the user or repair manuals.? Can any help me make sure the BM adjustment is set correctly?
On a different topic.? I have an FT-101B that I used back in the 70s.? It has been sitting in a box for maybe 40 years.? I started it up using a variac and bringing the voltage up slowly.? It is clear from noise in various controls and switches that there are dirty of corroded contacts.? Is it advisable to spray contact cleaner on noise controls and, if so, what is the correct way to do this?
It does send and receive.
I look forward to and appreciate any assistance on these two matters.
Thanks,
--Kenoli
KB6EMG
|
Steve G4AQB
Bruce Collins