The opinions on this are bimodal: some say ~7030, others ~7060. Hopefully
someone else will weigh in with something more definitive.
Wayne
N6KR
> On Sep 3, 2021, at 7:45 PM, Dave wrote:
>
> Any frequency like that for 40?
>
> 73, and thanks,
> Dave (NK7Z)
> https://www.nk7z.net
> ARRL
Any frequency like that for 40?
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
On 9/3/21 4:58 PM, Wayne Burdick wrote:
Whenever I'm not using the K4 for something in particular, I
Whenever I'm not using the K4 for something in particular, I leave it parked at
14.060 MHz, with the AF gain just high enough to catch my attention if a signal
appears. I use a medium bandwidth (1 kHz) to allow for signals a bit
off-frequency.
For those who didn't know: this is the most common
I have repaired several of these for ZL amateurs - by a similar method.
My theory is that the large lump of steel plate (27g) in these mics could
contribute as it means the mic has more kinetic energy when dropped. Three
of the mics I repaired were damaged in shipment from USA to New Zealand.
When
I worked in a factory making injection molded plastic items, which I
presume the mic cases are. If the machines are not adjusted properly --
temperature, pressure, dwell, cooling, etc., it's possible to make parts
that are extremely brittle. Sometimes the stress of assembly and
shrinkage over
Ian,
Elecraft has had a 'rash' of those incidents, but I thought they
addressed that with the mic vendor (yes, Elecraft does not stock parts
for the mic, they buy them whole from the vendor).
There was some speculation a few months ago about the cause -- and I
don't know the answer. Many
Ian,
You might find this microphone available from one of the Chinese vendors, and
if so, likely for a lot less than Elecraft charges.
73
Jay K3BH
On Fri, Sep 3, 2021, at 17:00, Ian Liston-Smith wrote:
> Goodness! Thanks for all the replies where you've had the same happen.
> It's extremely
Goodness! Thanks for all the replies where you've had the same happen. It's
extremely disappointing that Elecraft ended up selling an inferior product for
so much money - especially if they are not going to sell spare cases. Seems
this is a very common problem and not just me being clumsy.
My
Their 100 Ah battery weighs 61 lb. I bet it is still a lead acid battery. A
100 Ah Lithium Iron Phosphate weighs about 31 lb. A Lithium Cobalt may be
half that.
They are dancing around but never say no lead or no acid, only "no acid
mist". Any regular gel cell meets that.
73,
Mark
W7MLG
On
I'm not using glue that melts that plastic together. My strategy was rather
to embed the post into a good amount of epoxy. There is really no force on
the mounts other than the pull of the screws. I suspect that the plastic
"studs" were a bit short and then pulling on them with the screws
I did look at the link and read both pages for the standard and gel
batteries. You should do the same ... there is no way that the gel
batteries have both silicone and silicate plates, and the text uses both
interchangeably.
More importantly ... do a Google search like I did for "silicone
It's either a marketing term, or it's a clumsy tech writing mistake. I
vote the latter.
The description for the regular batteries states that the plates are a
silicate compound, not silicone.
The description for the gel batteries jumps back and forth between using
silicate and silicone.
That’s funny!!
Hank
K4HYJ
> On Sep 3, 2021, at 2:18 PM, Fred Jensen wrote:
>
> I suspect it's a typo for lithium-silicon. The region just south of San
> Francisco nicknamed "Silicon Valley" is sometimes misspelled "Silicone
> Valley." The real "Silicone Valley" is located some 700 km
I suspect it's a typo for lithium-silicon. The region just south of San
Francisco nicknamed "Silicon Valley" is sometimes misspelled "Silicone
Valley." The real "Silicone Valley" is located some 700 km south in
what is commonly called "Hollywood."
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
I like to mix in some short lengths of fiberglass with the
epoxy. It provides the strength while the epoxy provides the
"glue" holding everything together. An example is repairing the
ashtray cover on my 1993 Mazda Miata (with 300,000+ miles). I
repaired it at least two years ago, and it is
I don't have one and don't know the what material the housing is made of, but
this adhesive usually does a much better job than epoxy on plastics:
https://www.3m.com/3M/en_US/p/d/b40071871/
I have similar things happen with other items...the long term stress causes the
bosses to eventually
When I saw a reference to silicone batteries in a flying discussion forum I
first thought it had to be a typo or a joke. It seems they are real -
http://www.siliconebatteries.ca/index.html
Anyone here had any experience with them?
73,
Andy. k3wyc
My K2 works great with a Kenwood MC-43S mic. Also works with a D-104
with a FET
voltage follower and a standard microphone plug.
- Jerry KF6VB
On 2021-09-03 06:53, Tommy58 wrote:
My MH-3 case also recently fell apart and this happened when I finally
took it out of the box
Tom,
If you haven't mucked with the screws just try to epoxy it back like
I did. That will make it much stronger than original.
Len
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Tommy58
Sent: Friday, September
My MH-3 case also recently fell apart and this happened when I finally
took it out of the box to use it for the first time a few weeks ago. The
posts that the screws go into were all busted off the front case.
HORRIBLE design. I will not buy another at that price point.
Anyone know of an
Hi Ian,
I have exactly the same issue. I too am a CW guy and my MH3 only
hangs on a hook. The case "studs" appear to have cracked under the weight of
the cord. I emailed Elecraft support and was told the Mic was no longer
under warranty and I would need to buy a new mic. No one
Does anyone know if Elecraft sell replacement cases for this expensive
microphone? I've barely used mine (I'm a CW chap) and it's already fallen
apart! The three plastic internal mounting pillars have snapped off. I guess
it's been dropped, but only on to carpet and I'm minded to think a $70
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