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In Reply to: RE: how many have tried a Rhombic FM Antenna? posted by user510 on June 13, 2017 at 13:39:36
You'll need to figure out the alignment of your rooms on the map.
then figure if that situation allows for one or more.
Happy to provide feedback as you work on it.
Warmest
Tim Bailey
Skeptical Measurer & Audio Scrounger
Follow Ups:
Above: the FM Fool list of stations that are, supposedly, available in my location.
I did move the dipole antenna, again and now feel that I've made a slight improvement in reception qualities. Here's a photo of the new dipole location:
next; a station roll call of sorts. Using the Carver TX-11b I tune in to each of the station channels on the FM Fool list and report signal strength, genre and note reception qualitiesnote about signal strength. The TX-11b tuner uses an array of 6 led bulbs to indicate signal strength where 1 bulb lit indicates weak and 6 bulbs lit indicates max strength. this tuner is equipped with some filtering capabilities such as noise reduction, multipath reduction. Both of these are left 'off' for this exercise. there is also a switch for IF band width (narrow / wide). The default position is wide and left that way for this exercise.
FM Fool List for 10 Monohon Landing Rd., Raymond, Wa
Call Sign / Channel / sig strength / Genre / Notes
K266BL 101.1 5 OF 6 pop Noise, slight
K291B1 106.1 6 OF 6 country Noise, slight
KACW 91.3 6 OF 6 RELIGIOUS Noise, slight
K212AG 90.3 6 OF 6 jazz/npr almost clean
KMNT 104.3 3 OF 6 Noise, heavy
KSWS 88.9 3 OF 6 Noise, heavy
KLMY 99.7 3 OF 6 almost clean
KWAO 88.1 4 OF 6 Noise, heavy
KMUN 91.9 3 OF 6 Noise, heavy
KITI-FM 95.1 3 OF 6 Noise, heavy
KVAS 103.9 3 OF 6 Noise, heavy
KJET 105.7 6 OF 6 CLEAN
KXXO 96.1 4 OF 6 Noise, heavy
KRQT 107.1 3 OF 6 Noise, heavy
KFOO 102.9 3 OF 6 Noise, heavy
KRKZ-FM 94.3 3 OF 6 Noise, heavy
KSWW 102.1 3 OF 6 Noise, heavy
KOAC-FM 89.7 3 OF 6 WHITE NOISE
KGIO 90.5 4 OF 6 CLEAN
K265CP 100.9 4 OF 6 almost clean
K211AP 90.1 5 OF 6 jazz/npr Noise, heavy
KYYO 96.9 3 OF 6 Noise, heavy
KXXK 102.3 3 OF 6 country Noise, heavy
KCRX-FM 102.3 3 OF 6 Noise, heavy
KOMO-FM 97.7 4 OF 6 almost clean
KDUX-FM 104.7 3 OF 6 Noise, heavy
KDDS-FM 99.3 3 OF 6 Noise, heavy
KANY 107.3 3 OF 6 Noise, heavy
K220HE 91.9 3 OF 6 Noise, heavy
KLYK 94.5 3 OF 6 Noise, heavy
KLSY 93.7 4 OF 6 HISPANIC almost clean
KLOY 88.7 3 OF 6 Noise, heavy
KBGE 97.9 3 OF 6 POP Noise, heavy
KCYS 96.5 3 OF 6 country Noise, heavy
KEUB 93.3 3 OF 6 Noise, heavy
KTJC 91.1 5 OF 6 country almost clean
K292G2 106.3 4 OF 6 country CLEAN SAME AS 106.1
KNBQ 98.5 3 OF 6 Noise, heavy
K211ET 90.1 5 OF 6 jazz/npr moderate noise
K206CL 89.1 3 OF 6 Noise, heavy
KLWA 101.3 4 OF 6 aberdeen station almost clean
KPPK 98.3 3 OF 6 Noise, heavy
K269FT 101.7 3 OF 6 Noise, heavy
KACS 90.5 5 OF 6 jazz/npr moderate noise SAME AS 90.3
KLWO 90.3 6 OF 6 jazz/npr almost clean
KXL-FM 101.1 5 OF 6 POP almost clean
KINK 101.9 3 OF 6 PORTLAND Noise, heavy
KKRZ 100.3 3 OF 6 Noise, heavy
KUKN 105.5 5 OF 6 Noise, heavy
KOPB 91.5 5 OF 6 country CLEAN
KKCW 103.3 3 OF 6 Noise, heavy
KGON 92.3 3 OF 6 Noise, heavy
KLTH 106.7 3 OF 6 WHITE NOISE
KVCH-FM 97.1 3 OF 6 Noise, heavy
KBFF 95.5 3 OF 6 Noise, heavy
K224DR 92.7 3 OF 6 WHITE NOISE
KJVH 89.5 3 OF 6 Noise, heavy
KXJM 107.5 3 OF 6 Noise, heavy
KCPB-FM 90.9 4 OF 6 WHITE NOISE
KPDQ-FM 93.9 3 OF 6 Noise, heavy
KLVP 97.9 3 OF 6 Noise, heavy
K234AU 94.7 3 OF 6 Noise, heavy
KWJJ-FM 99.5 3 OF 6 Noise, heavy
K283BT 104.5 3 OF 6 Noise, heavy
KUPL 98.7 3 OF 6 Noise, heavyOther note:
My target station is fm 90.3 In Seattle it identifies as KNKX FM 88.5. In Raymond it is listed as 90.3. On the FM Fool list I see several stations using that frequency. And this station comes through from FM 90.1 thru 90.5. The strongest and cleanest reception is at 90.3What's next Tim?
-Steve
Edits: 06/16/17
Hi Tim.
I appreciate the help. I have a new page up on my website that will be used to detail my experiments and progress on this problem with FM reception. Link below to the page which will offer more info than I have space for here.
Above: Google Earth Satellite image that I have annotated a little bit shows the building I'm in, the terrain and compass headings.I invite everyone to view this page and comment here.
thanks,
-Steve
Edits: 06/14/17
then we amp the bearings to them, and distances
THEN we consider IF any rhombic is feasible, in any of your rooms!!
Warmest
Tim Bailey
Skeptical Measurer & Audio Scrounger
Well I know one of those stations and it is detailed and mapped on the page I linked to in my previous reply The station in question actually provided a map, which I include on that page.With regard to the other stations I have a mix and some of those come in strong while others do not. As I noted earlier, I'm really after that Jazz station which is at frequency 90.3fm for the Raymond area. In the Seattle area it is received at 88.5fm. There are many other frequencies this station broadcasts over across the west end of Washington state.
fm fool map:
-Steve
Edits: 06/14/17
I see you have worked out the compass bearings from your place to the different stations.
Focus on the ones whose programming really matters to you.
Do some have more then one txer site in range?
Select strongest txer / signal at your place.
Draw those bearings on to a plan of your apartment.
Then select - which rooms - to put a large enough (enough gain) rhombic in - so that its axis points at one or two/three - or can be 'spread' - see the Audio article for that spread version of a rhombic.
I am fortunate that one* of my two desired stations (*very powerful txer) is on one high tower - plus the one Txer less than 2km away - so that one new 6 element Yagi pointed at the tower does the job.
Warmest
Tim Bailey
Skeptical Measurer & Audio Scrounger
Wow, Timbo! you have your hands full! Funny thing to see the antennae questions heat up again. What do you suppose it means?
Best,
Jim
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