Re: MFJ 1708B-SDR
OK? This the loss between the ports..? so power on? (? Not in TX )
From ANT connection to the SDR? it has 2 db of loss? should have? 0 DB? or no loss ( shorted )
From ANT connection to the
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Skip
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#54
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Re: MFJ 1708B-SDR
Please forgive my ignorance, can you explain what this is?
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Russ
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#53
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Re: MFJ 1708B-SDR
ANY ONE????
Skip
By
Skip
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#52
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MFJ Ant Tuners, Ant, Speaker and more FS
MFJ Antenna Tuners, HF Antenna, Speaker,
and more For Sale:
.
MFJ-962 High Power HF Antenna Tuner:
The MFJ-962 HF antenna tuner will handle full
legal power with ease. It even says 1.5
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Ken, W8EK
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#50
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MFJ 1708B-SDR
All, This does not seem right..
Powered on
ANT to XCVR=? -50DBM to -35 DBM? ( 2 Mhz,30Mhz)
ANT to SDR= -2dbm across frequencies 2-30 Mhz
Power on in TX
Ant to XCVR=? 0DBM
Ant to SDR=?? > -60
By
Skip
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#49
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Re: Changing The Coax Connector on MFJ-4601, Window ANT Feedthru
I ordered the 4602 entry panel from them, but I ordered it with N connectors instead of PL style, and there was no extra charge. PL-259 fittings are junk in my opinion, and are best used for audio
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David Frechette
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#48
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Re: Changing The Coax Connector on MFJ-4601, Window ANT Feedthru
Thank you for all that replied with answers.
I just received the MPD female connecter I ordered.
Hopefully it will warmup a little in the next week or so, It shouldn’t take more than 10
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Tom Mackell
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#46
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Re: Changing The Coax Connector on MFJ-4601, Window ANT Feedthru
I changed some. No problem loosen the nut and out it comes you don't need to mess with the panel. The problem is that a standard N barrel isn't long enough to seat a male on both sides you need a
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Dennis Fernandez N4KPI
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#45
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Changing The Coax Connector on MFJ-4601, Window ANT Feedthru
I have an older MFJ-4601, I would like to change one of the SO-239 to a “N” type connector.
I was wondering how hard is this going to be? Are the panels glued to the board?
I don’t want to
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Tom Mackell
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#44
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MFJ 1708B-SDR MODS
Heard of a mod to short together the Ant and Xcvr ports together? so transceiver can also RX while in RX mode...? any one know of this?
Skip? WB4YO
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Skip
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#43
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Scammer "MFJ" website
There is a scammer site that's been reported to the FTC. From MFJ's site:
"There is a SCAM website currently advertising as MFJ. Please be aware that this
site is not MFJ Enterprises, Inc. We have
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Donald Hellen
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#42
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Re: MFJ 993B Intellituner & 30 meters (10MHZ)
James . . .
What is displayed for the SWR, forward, and reflected power on the tuner? What
does the power output of the radio and on the display show (you would have to
press the LCD Mode switch to
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Donald Hellen
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#40
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MFJ 993B Intellituner & 30 meters (10MHZ)
Hi I am using an Icom 7300 with my MFJ 993B Intellituner with the MFJ interface cable. I notice today that the tuner would not tune up 10MHZ. I normally tune at 20 watts power. But then again if the
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James M. Horak (KG5PTE)
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#39
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MFJ-993BRT
I recently made some repair work on my MFJ-993BRT tuner.
Unfortunately I forgotten to check the followig:
1. Can the switch board (atop the main pcb) be easily removed?
2. IMO the tuner should work
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Robert <rdiamant36@...>
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#38
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Re: MFJ-259B polarity reversal damage
Thanks Jeff
eBay is high risk to get fake…
Unfortunately Mouser has out of stock.
So RF Microwave only to get them…
73 - Petr. OK1RP
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Petr Ourednik
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#37
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Re: MFJ-259B polarity reversal damage
Mouser
https://www.mouser.com/ProductDetail/Broadcom-Avago/HSMS-2820-BLKG?qs=RQ9zk%252B50r5EQ9ZE26pWRFQ%3D%3D
RF
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JeffBanke
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#35
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Re: MFJ-259B polarity reversal damage
Hi all
any hint where to buy genuine schottky diodes surface mount 2820s for MFJ please?
Petr, OK1RP
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Petr Ourednik
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#34
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Re: MFJ-259B polarity reversal damage
There is a nice rectifier on the external power input that should/might protect the rest of the meter.
Bob N5TX
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Bob Fleming
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#32
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Re: MFJ-259B polarity reversal damage
This might help:
https://elektrotanya.com/mfj_259b_antenna_analyzers_sch.pdf/download.html#dl
Bob N5TX
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Bob Fleming
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#31
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Re: MFJ-259B polarity reversal damage
Hi Don,
many thanks.
I emailed to MFJ in parallel and I got short reply "schottky diodes surface mount 2820s"...
Which is surprising me a bit as I expected some damage around the power supply
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Petr Ourednik
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#30
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