[K3PZN-List] Yaesu FT-891 Thoughts
Scott, KB3JQQ
kb3jqq at yahoo.com
Tue Sep 5 22:07:49 EDT 2017
I meant to send this to the list so others can comment, too...
Sent: Tuesday, September 5, 2017 9:55 PM
A half wave dipole is two 1/4 waves fed equal and opposite.
If you feed a dipole with coax (unbalanced) you will havea weird radiation pattern and lots of RF coming back on the
outside of the shield. A balun is needed. Choke baluns(a coil of coax or ferrite sleeves on the coax at the feedpoint) do help, but a proper 4:1 current balun works better.
From: Kyle Thornton <kyle.3599 at outlook.com>
To: "Scott, KB3JQQ" <kb3jqq at yahoo.com>; Carroll County Amateur Radio Club <k3pzn-list at mailman.qth.net>
Sent: Tuesday, September 5, 2017 9:47 PM
Subject: Re: [K3PZN-List] Yaesu FT-891 Thoughts
Scott,
Interesting I didn't know that. I think I'm going to get some 12-14 gauge insulated wire and solder those to an SO-239 to make a dipole positioned east west
Kyle
> On Sep 5, 2017, at 9:45 PM, Scott, KB3JQQ via K3PZN-List <k3pzn-list at mailman.qth.net> wrote:
>
> No. A quarter wave on 40 is a half wave on 20.
> Only odd quarter waves are easy to tune.
>
> From: Kyle Thornton <kyle.3599 at outlook.com>
> To: Carroll County Amateur Radio Club <k3pzn-list at mailman.qth.net>
> Sent: Tuesday, September 5, 2017 9:32 PM
> Subject: Re: [K3PZN-List] Yaesu FT-891 Thoughts
>
> Curt,
> Since I'm going to make a 40m dipole I want to make a super good one. Made out of copper pipe. And recommendations or thoughts? I want to go be rotatable. I have a pole and tripod system so I'd just need to build the dipole part. Would there be a way to make it adjustable for say 40 and 20?
> Kyle
>
>> On Sep 5, 2017, at 4:18 PM, Kyle Thornton <kyle.3599 at outlook.com> wrote:
>>
>> Thanks Pat!
>> Yes Curt is very helpful! How much does he charge for estimates?
>> Kyle
>>
>>> On Sep 5, 2017, at 4:11 PM, Kilroy, Patrick L. (GSFC-5680) <patrick.l.kilroy at nasa.gov> wrote:
>>>
>>> Hi Kyle,
>>>
>>> Curt always gives great advice, so MY advice is to listen to him, HI HI.
>>>
>>> Once you are certain that the main problem is in the radio itself then I suggest that you run, don't walk, to drop it off for an estimate with a ham op in Thurmont, Md., a one-time, long-time member of our club, great CW op, Pete Young, K3IN. Pete is well trusted in our ranks as humble sole owner and operator of Mid-Atlantic Amateur Radio Service out of his house.
>>>
>>> See his bio at https://www.qrz.com/db/K3IN or his FB page at https://www.facebook.com/midatlanticradio/
>>> and get his e-mail address there too. Won't hurt to shoot him a note of introduction!
>>>
>>> Cheers,
>>>
>>> Pat
>>> N8PK
>>> Sykesville
>>>
>>> -----Original Message-----
>>> From: Curt Milton [mailto:wb8yyy at yahoo.com]
>>> Sent: Saturday, September 02, 2017 7:38 PM
>>> To: Carroll County Amateur Radio Club <k3pzn-list at mailman.qth.net>
>>> Subject: Re: [K3PZN-List] Yaesu FT-891 Thoughts
>>>
>>> Kyle
>>> sorry about the rig issue. let's insure you don't have a short circuit connection at your antenna input, and that you aren't running a high VSWR where you are operating. so please be cautious in this regard. (if momentary issues would kill a rig - mine would all be dead - but persistent operation into a bad antenna can cause problems).
>>>
>>> you certainly acquired a nice rig. the operator's (you) connection with the front panel is very important - you were wise to evaluate that you will enjoy using the rig.
>>>
>>> if you use it on FM -- please reduce the output power on that mode - I suggest around 40-50%. it won't make a huge difference in your range -- but it will help preserve the finals as FM runs 100% duty cycle when transmitting. it is much harder on the rig than SSB. same for digital modes -- run those at lower power.
>>>
>>> Do explore the digital modes -- all from RTTY to PSK31 to all the newer modes can be a blast.
>>>
>>> enjoy the new rig.
>>>
>>> Curt
>>>
>>> On Saturday, September 2, 2017 4:39 PM, Kyle Thornton <kyle.3599 at outlook.com> wrote:
>>> Hi All,
>>> So my 706 seems to have bitten the dust (I think the finals went bad as it has very very little output power, Mike can hear me but nobody else seems to be able to but he’s also a stones throw away) After contemplating what to do as its a 20 year old radio even though its a very nice radio I decided to get the 891. I don’t plan on getting rid of it but to use it to learn what went wrong and how to fix it. I just got the 891 today and so far love it! Haven’t made any contacts yet but the receive is really nice and you can really pull a signal in out of the noise. I have not tried it yet with digital as I’m waiting on the cables from Tigertronics but I suspect it will do well. A lot of people seem to complain that it doesn’t have 2m/70cm like the 857D did but I do not find that a problem as its my base HF radio to go along with my Kenwood TM-281a. Its a VERY menu driven radio but all the common stuff (except power output) is in a quick access menu. Other than that I’ve had no issues what so ever with it. Im very impressed with Yaesu as I’ve never had one and the quality is amazing. I think I’m a pretty picky person with radios and how they look, I had looked at an 857D but I didn’t like how small the screen was and although I’m sure useful I really didn’t like the HUGE VFO knob it had and it was also a bit more expensive. I received a heil microphone with it for free as some offer HRO was doing. Haven’t tried that out but its a kind of mic that you’d put on a boom.
>>> Let me know what you guys think about it or any questions about it. Just thought id give my general view of it after receiving it.
>>> Kyle
>>> KC3FMP
>>> ______________________________________________________________
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>>
>> 73 de K3PZN Westminster, MD
>> ______________________________________________________________
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> ______________________________________________________________
>
> 73 de K3PZN Westminster, MD
> ______________________________________________________________
> K3PZN-List mailing list
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>
> This list hosted by: http://www.qsl.net
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>
> ______________________________________________________________
>
> 73 de K3PZN Westminster, MD
> ______________________________________________________________
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