EV's Recommended & Top Rated DTV Indoor UHF/VHF Set Top Antenna Review Round-Up Guide - Page 19 - AVS Forum
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post #541 of 3332 Old 07-12-2008, 09:21 AM
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EscapeVelocity, thank you again for this wonderful thread.

I never had any overnight gain decreases with either of my Philips MANT510's.

I will politely request that you and others not discuss the converter boxes in this thread. There are a ton of those threads here and if that discussion spills over here a lot of great antenna information will get lost.

BTW, you were so right about the RadioShack UFO. It is definitely superior to my MANT510 for signal stability.
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post #542 of 3332 Old 07-12-2008, 10:51 AM
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Anecdotally, I bought the Philips Mant510 and could barely get anything. My Silver Sensor gets most of the stations even though I do have to fiddle with positioning.

53 miles, line-of-sight, to the towers.
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post #543 of 3332 Old 07-12-2008, 11:47 AM
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Quote:
Originally Posted by EscapeVelocity View Post

Rammitinski, I wish the CM7000 was available locally.

Fry's carries it. It was on sale all this past week, I believe, for $59.99. And they now take coupons.

I got the CM first - then I got a DVTPal. I wanted at least one with pass-thru, and I came this close to getting the Zenith. In fact, I bought one earlier on to try it out first. Excellent box - but I did notice that synch issue on mine, and when I went over to a friend's yesterday, and saw his (that I recommended to him) it was doing the same thing. There have been other, scattered reports of it here, too. Excellent PQ for composite, and very good sensitivity, though. In contrast, the DTVPal's PQ is horrid. Very, very soft. The CM and the LG is the best I saw for PQ (I've never seen the Tivax, which is supposed to be good, too). Very sharp and clean. But the CM is slightly better, probably because of the s-video. They both even look good on my 50" HD display.
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post #544 of 3332 Old 07-12-2008, 01:09 PM - Thread Starter
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Thanks Rammitinki.

No worries Allargon. However, Im using a Converter Box as a Signal Level Meter, and so here we are.

Vizio VP322 Plasma / Vizio GV42LF LCD / Denon 2200 Silicon Image DVD / Panasonic S97 Faroudja Genesis DVD / Oppo 970HD Mediatek DVD / Oppo 983H Anchor Bay DVD / Panasonic LX-600 Laserdisc / Aiwa MX100 Multi-region VCR / JVC S7600 S-VHS / PS2 / Sega Genesis / Nintendo SNES / Roku 2 XS & HD-XR / Realistic STA-90 Reciever / Realistic Minimus 7 / Antennacraft G1483 Hoverman / Belden 7915A RG6 / Channel Master 7777 Titan 2 UHF/VHF / Panasonic AX-200u / Optoma Graywolf 92" / Draper Luma 92"
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post #545 of 3332 Old 07-12-2008, 02:46 PM - Thread Starter
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Alright, I ditched the Sanyo, and hooked up the RCA DTA800B1 to the Composite in on the Vizio.

One thing is for certain, the Vizio GV42LF has a more sensitive tuner than the RCA DTA800B1. Not surprising really. Vizio has always been known for excellent tuners.

I ran a channel scan on the Vizio and picked up all of my digitals with the CM4220 + CM7777 amp on the roof. Then I hooked up the CM4220 + CM7777 amp to the RCA and ran a channel scan and picked up everthing but Channel 7.1, 7.2, 7.3 PBS Charleston. I then checked the signal meter for each station and 24.1 Fox, 2.1 NBC, 2.2 CW, 4.1 ABC, 5.1 CBS were all at about 50%. 36.1 MyTV and 16.1, 16.2, 16.3 PBS alternate were at about 30%.

Vizio VP322 Plasma / Vizio GV42LF LCD / Denon 2200 Silicon Image DVD / Panasonic S97 Faroudja Genesis DVD / Oppo 970HD Mediatek DVD / Oppo 983H Anchor Bay DVD / Panasonic LX-600 Laserdisc / Aiwa MX100 Multi-region VCR / JVC S7600 S-VHS / PS2 / Sega Genesis / Nintendo SNES / Roku 2 XS & HD-XR / Realistic STA-90 Reciever / Realistic Minimus 7 / Antennacraft G1483 Hoverman / Belden 7915A RG6 / Channel Master 7777 Titan 2 UHF/VHF / Panasonic AX-200u / Optoma Graywolf 92" / Draper Luma 92"
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post #546 of 3332 Old 07-12-2008, 02:57 PM - Thread Starter
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RCA ANT110 in the North facing corner window ledge

2.1 (real 50) = 14
4.1 (R 34) = 0
5.1 (R 47) = 11
16 (R 44) = 0
24.1 (R 40) = 13
36.1 (R 35) = 0

Vizio VP322 Plasma / Vizio GV42LF LCD / Denon 2200 Silicon Image DVD / Panasonic S97 Faroudja Genesis DVD / Oppo 970HD Mediatek DVD / Oppo 983H Anchor Bay DVD / Panasonic LX-600 Laserdisc / Aiwa MX100 Multi-region VCR / JVC S7600 S-VHS / PS2 / Sega Genesis / Nintendo SNES / Roku 2 XS & HD-XR / Realistic STA-90 Reciever / Realistic Minimus 7 / Antennacraft G1483 Hoverman / Belden 7915A RG6 / Channel Master 7777 Titan 2 UHF/VHF / Panasonic AX-200u / Optoma Graywolf 92" / Draper Luma 92"
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post #547 of 3332 Old 07-12-2008, 03:11 PM
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Spent the week up at a cabin in Baldwin, MI 49304. Wouldn't you know it, the day we leave the owners ask me for advice regarding a digital box. They get two channels analog now, so I knew that TV Fool wouldn't give me optimism. Sure enough, towers 30 miles away, weak signals, and I've got to contend with hilly/mountainous terrain FULL of trees. The cabin is surrounded by trees, except for the lakeshore it sits on. Fun fun.

I figure they should get a Zenith DTT901 for its fringe capability, but I fear they might have to put up an outdoor antenna to pull in anything. Unfortunately, their association prohibits rooftop. The nearby DirectTV subscribers have the dishes attached to short poles next to the mailbox! And the current channels they MIGHT get digitally will be moving from UHF back to VHF in February... whee!

I'll be watching this thread intently again... whatever consumer indoor antenna ultimately sits near the top of EV's list will probably be the one I buy and lug up there to try out vs. their rabbit ears. At 60 miles (120 roundtrip), the nearest electronics superstore is too far to be jockeying between once I'm up there.
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post #548 of 3332 Old 07-12-2008, 03:29 PM - Thread Starter
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Philips MANT510 gain on high in North facing corner window

2.1 (R 50) = 40
4.1 (R 34) = 0
5.1 (R 47) = 0
16.1 (R 44) = 33
24.1 (R 40) = 40
36.1 (R 35) = 30

DB2 in North facing window

2.1 (R 50) = 22
4.1 (R 34) = 10
5.1 (R 47) = 10
16.1 (R 44) = 12
24.1 (R 40) = 20
36.1 (R 35) = 12

Vizio VP322 Plasma / Vizio GV42LF LCD / Denon 2200 Silicon Image DVD / Panasonic S97 Faroudja Genesis DVD / Oppo 970HD Mediatek DVD / Oppo 983H Anchor Bay DVD / Panasonic LX-600 Laserdisc / Aiwa MX100 Multi-region VCR / JVC S7600 S-VHS / PS2 / Sega Genesis / Nintendo SNES / Roku 2 XS & HD-XR / Realistic STA-90 Reciever / Realistic Minimus 7 / Antennacraft G1483 Hoverman / Belden 7915A RG6 / Channel Master 7777 Titan 2 UHF/VHF / Panasonic AX-200u / Optoma Graywolf 92" / Draper Luma 92"
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post #549 of 3332 Old 07-12-2008, 03:30 PM - Thread Starter
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None of the above units were turned for Channel 16 alternate PBS at 23 miles South West. They were all pointed at the North towers.

Vizio VP322 Plasma / Vizio GV42LF LCD / Denon 2200 Silicon Image DVD / Panasonic S97 Faroudja Genesis DVD / Oppo 970HD Mediatek DVD / Oppo 983H Anchor Bay DVD / Panasonic LX-600 Laserdisc / Aiwa MX100 Multi-region VCR / JVC S7600 S-VHS / PS2 / Sega Genesis / Nintendo SNES / Roku 2 XS & HD-XR / Realistic STA-90 Reciever / Realistic Minimus 7 / Antennacraft G1483 Hoverman / Belden 7915A RG6 / Channel Master 7777 Titan 2 UHF/VHF / Panasonic AX-200u / Optoma Graywolf 92" / Draper Luma 92"
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post #550 of 3332 Old 07-12-2008, 03:40 PM - Thread Starter
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DB2 with Motorola BDA S1, 15db amp at @2.5db noise max

2.1 (R 50) = 44
4.1 (R 34) = 19
5.1 (R 47) = 21
16.1 (R 44) = 20
24.1 (R 40) = 42
36.1 (R 35) = 17

Vizio VP322 Plasma / Vizio GV42LF LCD / Denon 2200 Silicon Image DVD / Panasonic S97 Faroudja Genesis DVD / Oppo 970HD Mediatek DVD / Oppo 983H Anchor Bay DVD / Panasonic LX-600 Laserdisc / Aiwa MX100 Multi-region VCR / JVC S7600 S-VHS / PS2 / Sega Genesis / Nintendo SNES / Roku 2 XS & HD-XR / Realistic STA-90 Reciever / Realistic Minimus 7 / Antennacraft G1483 Hoverman / Belden 7915A RG6 / Channel Master 7777 Titan 2 UHF/VHF / Panasonic AX-200u / Optoma Graywolf 92" / Draper Luma 92"
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post #551 of 3332 Old 07-12-2008, 03:43 PM - Thread Starter
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We can see the interaction of the antenna elements and amplifiers in the above numbers.

You have to capture a minumum amount of signal with the antenna elements before the amplifiers can work to boost and stabilize your signal.

Vizio VP322 Plasma / Vizio GV42LF LCD / Denon 2200 Silicon Image DVD / Panasonic S97 Faroudja Genesis DVD / Oppo 970HD Mediatek DVD / Oppo 983H Anchor Bay DVD / Panasonic LX-600 Laserdisc / Aiwa MX100 Multi-region VCR / JVC S7600 S-VHS / PS2 / Sega Genesis / Nintendo SNES / Roku 2 XS & HD-XR / Realistic STA-90 Reciever / Realistic Minimus 7 / Antennacraft G1483 Hoverman / Belden 7915A RG6 / Channel Master 7777 Titan 2 UHF/VHF / Panasonic AX-200u / Optoma Graywolf 92" / Draper Luma 92"
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post #552 of 3332 Old 07-12-2008, 03:48 PM - Thread Starter
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For the record, the ANT110 brought in 3 channels weakly.
The MANT510 brought in 4 channels strongly.
The DB2 unamped brought in all channels but some rather weakly.
The DB2 amped was topped only by the CM4220 on the roof witht he CM7777 amp.

Vizio VP322 Plasma / Vizio GV42LF LCD / Denon 2200 Silicon Image DVD / Panasonic S97 Faroudja Genesis DVD / Oppo 970HD Mediatek DVD / Oppo 983H Anchor Bay DVD / Panasonic LX-600 Laserdisc / Aiwa MX100 Multi-region VCR / JVC S7600 S-VHS / PS2 / Sega Genesis / Nintendo SNES / Roku 2 XS & HD-XR / Realistic STA-90 Reciever / Realistic Minimus 7 / Antennacraft G1483 Hoverman / Belden 7915A RG6 / Channel Master 7777 Titan 2 UHF/VHF / Panasonic AX-200u / Optoma Graywolf 92" / Draper Luma 92"
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post #553 of 3332 Old 07-12-2008, 03:50 PM - Thread Starter
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This is a preliminary test run for full blown shootout. I dont like that you cant directly tune from one station to the other while viewing the signal meter, you have to back out of the menus and change the channel, then drop back in the menus to the signal meter for each channel. I also dont like that the RCA tuner is not as sensitive as the Vizio(and probably the Zenith/LG and CM7000 boxes).

Vizio VP322 Plasma / Vizio GV42LF LCD / Denon 2200 Silicon Image DVD / Panasonic S97 Faroudja Genesis DVD / Oppo 970HD Mediatek DVD / Oppo 983H Anchor Bay DVD / Panasonic LX-600 Laserdisc / Aiwa MX100 Multi-region VCR / JVC S7600 S-VHS / PS2 / Sega Genesis / Nintendo SNES / Roku 2 XS & HD-XR / Realistic STA-90 Reciever / Realistic Minimus 7 / Antennacraft G1483 Hoverman / Belden 7915A RG6 / Channel Master 7777 Titan 2 UHF/VHF / Panasonic AX-200u / Optoma Graywolf 92" / Draper Luma 92"
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post #554 of 3332 Old 07-12-2008, 04:14 PM - Thread Starter
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Hooked up the RS 15-1634 to the Vizio tuner.....which is an amplified omni-directional unit. It is a UHF only antenna....which did not pick up any VHF channels at my location.

It performed similarly to the DB2 unamplified. Locking all stations with video but breakups on my 2 weakest stations.

Vizio VP322 Plasma / Vizio GV42LF LCD / Denon 2200 Silicon Image DVD / Panasonic S97 Faroudja Genesis DVD / Oppo 970HD Mediatek DVD / Oppo 983H Anchor Bay DVD / Panasonic LX-600 Laserdisc / Aiwa MX100 Multi-region VCR / JVC S7600 S-VHS / PS2 / Sega Genesis / Nintendo SNES / Roku 2 XS & HD-XR / Realistic STA-90 Reciever / Realistic Minimus 7 / Antennacraft G1483 Hoverman / Belden 7915A RG6 / Channel Master 7777 Titan 2 UHF/VHF / Panasonic AX-200u / Optoma Graywolf 92" / Draper Luma 92"
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post #555 of 3332 Old 07-12-2008, 04:48 PM
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Quote:
Originally Posted by EscapeVelocity View Post

Hey nwizer, thanks.

You need to post your TVFool.com info if you want some solid advice.

One thing to do is look for sweet spots or some people call them hot spots. Youll need 12 to 25 foot of coax to do that.

EV, thank you for offering to help.

my tvfool results for post-Feb 09 are in the attached picture.

here's my antennaweb.org results:

uhf WPXI-DT 11.1 NBC PITTSBURGH, PA 352° 6.3 48
uhf WTAE-DT 4.1 ABC PITTSBURGH, PA 136° 10.9 51
vhf WQED-DT 13.1 PBS PITTSBURGH, PA 12° 4.9 13
uhf WPCB-DT 50.1 CTVN GREENSBURG, PA 92° 9.9 50
uhf WQEX-DT 38.1 HSN PITTSBURGH, PA 12° 4.9 38
uhf WPCW-DT 49.1 CW JEANNETTE, PA 12° 4.9 49
uhf WPMY-DT 42.1 MNT PITTSBURGH, PA 356° 8.5 42
uhf KDKA-DT 2.1 CBS PITTSBURGH, PA 351° 8.6 25
uhf WQED-DT 13.1 PBS PITTSBURGH, PA 12° 4.9 38
uhf WPGH-DT 53.1 FOX PITTSBURGH, PA 356° 8.5 43
uhf WQEX-DT 16.1 HSN PITTSBURGH, PA 12° 4.9 26
vhf WWCP-DT 8.1 FOX JOHNSTOWN, PA 116° 45.1 8
uhf WWCP-DT 8.1 FOX JOHNSTOWN, PA 116° 45.1 29
vhf WTOV-DT 9.1 NBC STEUBENVILLE, OH 275° 34.4 9

looks like I'm actually less than 50 miles from the one station I really want to get (WWCP, 8.1)...too bad its gonna be VHF after Feb.

My house is brick and stucco, and I share a common wall with my neighbor...all of which as I understand it gives many indoor antennas a hard time. Thats why I'm probably going the outdoor route unless an indoor one with the sensitivity I need comes out.
LL
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post #556 of 3332 Old 07-12-2008, 04:56 PM
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Quote:
Originally Posted by EscapeVelocity View Post

Philips MANT510 gain on high in North facing corner window

2 = 40
4 = 0
5 = 0
16 = 33
24 = 40
36 = 30

DB2 in North facing window

2 = 22
4 = 10
5 = 10
16 = 12
24 = 20
36 = 12

EV: would it be possible to indicate the real RF numbers for your stations? Most local stations transmit at a different RF channel (usually UHF), and are "mapped" PSIP to a "virtual" channel. Providing the "real" radio frequency assignment would help us evaluate whether some indoor antennas work better with some UHF frequencies or VHF frequencies than others.

Examples from my local market:
NBC is RF 48 - virtual channel 5.1 (analog channel 5)
CBS is RF 39 - virtual channel 7.1 (analog channel 7)
KCTS/PBS RF 41 - virtual ch. 9.1 (analog ch. 9)
Fox is RF 18 - virtual channel 13.1 (analog channel 13)
The CW: RF 36 - virtual channel 11.1 (analog ch. 11)
MyTV is RF25 - virtual channel 22.1 (analog ch. 22)
KBTC/PBS RF 27 - virtual ch. 28.1 (analog ch. 28)

One Seattle station currently maps to its RF channel:
Daystar, RF 42 virtual ch. 42 (analog channel terminated last year, formerly ch. 56).
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post #557 of 3332 Old 07-12-2008, 04:58 PM
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Quote:
Originally Posted by fajitamosaic View Post

I figure they should get a Zenith DTT901 for its fringe capability, but I fear they might have to put up an outdoor antenna to pull in anything. Unfortunately, their association prohibits rooftop. The nearby DirectTV subscribers have the dishes attached to short poles next to the mailbox! And the current channels they MIGHT get digitally will be moving from UHF back to VHF in February... whee!

Do they have any thick trees on their property?

Sorry if this sounds silly, as I dont know as much as most of you guys about antennas but, if they have trees on their property, couldnt they hide an outdoor antenna in a tree? I would think if their association couldnt see the outdoor antenna, then they couldnt catch them and cause a problem.
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post #558 of 3332 Old 07-12-2008, 05:02 PM
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Quote:
Originally Posted by EscapeVelocity View Post

This is a preliminary test run for full blown shootout. I dont like that you cant directly tune from one station to the other while viewing the signal meter, you have to back out of the menus and change the channel, then drop back in the menus to the signal meter for each channel. I also dont like that the RCA tuner is not as sensitive as the Vizio(and probably the Zenith/LG and CM7000 boxes).

Users of the new DTA800B-1 (the unit with analog pass-through (APT)) reported there is a means to directly input RF channel numbers. You may have been sold the earlier DTA800B, which lacks APT.

The RCA does not have the audio problems which plagued earlier Zenith DTT900s. The strength of the RCA box is the Smart Antenna interface - if you can actually find a SA to try out - and the remote control design.
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post #559 of 3332 Old 07-12-2008, 05:05 PM
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What are the best sources for buying the DB-2 or its Eagle Aspen clone? Sounds like these might remain the best choices for indoor reception for the immediate future, until such time as Smart Antennas come on the market - and assuming that those units actually perform as advertised.
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post #560 of 3332 Old 07-12-2008, 05:10 PM
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EV: I wonder if the signal-strength meter on the DTA800 is calibrated differently than that on the Zenith DTT900 or on your Vizio TV. I'm astonished that your tuner is actually giving you a picture when signal strength is showing below 50%. My four months' user experience with the DTT900 using various aerials suggests there's really no picture with less than 50% strength. The manner in which signal strength is determined and displayed may differ from manufacturer to manufacturer.
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post #561 of 3332 Old 07-12-2008, 05:23 PM - Thread Starter
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2.1 = 50 real
4.1 = 34 real
5.1 = 47 real
7.1 = 49 real
16.1 = 44 real
24.1 = 40 real
36.1 = 35 real

I think the signal strength meters are all different between model to model, certainly manufacturer to manufacturer. My Vizio doesnt have a signal strength meter.

Vizio VP322 Plasma / Vizio GV42LF LCD / Denon 2200 Silicon Image DVD / Panasonic S97 Faroudja Genesis DVD / Oppo 970HD Mediatek DVD / Oppo 983H Anchor Bay DVD / Panasonic LX-600 Laserdisc / Aiwa MX100 Multi-region VCR / JVC S7600 S-VHS / PS2 / Sega Genesis / Nintendo SNES / Roku 2 XS & HD-XR / Realistic STA-90 Reciever / Realistic Minimus 7 / Antennacraft G1483 Hoverman / Belden 7915A RG6 / Channel Master 7777 Titan 2 UHF/VHF / Panasonic AX-200u / Optoma Graywolf 92" / Draper Luma 92"
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post #562 of 3332 Old 07-12-2008, 05:26 PM
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Quote:
Originally Posted by seatacboy View Post

What are the best sources for buying the DB-2 or its Eagle Aspen clone? Sounds like these might remain the best choices for indoor reception for the immediate future, until such time as Smart Antennas come on the market - and assuming that those units actually perform as advertised.


I got my DB2 from Antennas Direct. They have an excellent warranty and I just noticed, free shipping through July 18.
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post #563 of 3332 Old 07-12-2008, 05:41 PM - Thread Starter
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nwiser, outdoors and higher is generally better. If you are gangbusters to get the low end of VHF Hi at 40 miles, that will be the factor that determines your antenna system more than anything else, with you being 4 to 11 miles from most of your locals.

Disregarding Channel 8 Fox. You would be looking for a competent omnidirectional indoor antenna, with some VHF Hi performance because you have channel 11.....like the Winegard SS-3000 with its reflector removed, or the Philips MANT940. Perhaps the Philips MANT510, though it has some directionality, it has Rabbit Ear dipoles for solid VHF performance. Maybe one of the long antennas, the trio, Philips MANT950, RCA ANT806, Terk TV-55, which all have superior VHF performance compared to indoor uhf antennas without Rabbit Ears.

If you are gunning for Fox 8 in another market, you may want to get a combo UHF/VHF outdoor antenna, like the Winegard HD-1080 or the Channel Master 2016....which are reasonably small. Or you could get a classic UHF/VHF medium distance combo...or one of the new VHF Hi + UHF combos from Winegard. You could possibly(quite probably) pull it in with an indoor antenna at the appropriate window, but that would require trial and error testing by you....the guide on the front page can help you make informed decisions about the direction of your trial and error testnig.

Also, look for sweet spots. Youd be surprised how much the signal can vary from one cubic foot to the next. Ive heard that brick is really bad as well.


EDIT: Maybe look into trying out the legendary Winegard 7210P "Ghost Killer."

Vizio VP322 Plasma / Vizio GV42LF LCD / Denon 2200 Silicon Image DVD / Panasonic S97 Faroudja Genesis DVD / Oppo 970HD Mediatek DVD / Oppo 983H Anchor Bay DVD / Panasonic LX-600 Laserdisc / Aiwa MX100 Multi-region VCR / JVC S7600 S-VHS / PS2 / Sega Genesis / Nintendo SNES / Roku 2 XS & HD-XR / Realistic STA-90 Reciever / Realistic Minimus 7 / Antennacraft G1483 Hoverman / Belden 7915A RG6 / Channel Master 7777 Titan 2 UHF/VHF / Panasonic AX-200u / Optoma Graywolf 92" / Draper Luma 92"
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post #564 of 3332 Old 07-12-2008, 05:53 PM - Thread Starter
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Seatac, your big city high signal strength multi-path and interference problems are probably something to consider with regards to signal meters and tuners ability to post and image as well.

Just a thought.

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post #565 of 3332 Old 07-12-2008, 07:57 PM
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Originally Posted by EscapeVelocity View Post

nwiser, outdoors and higher is generally better. If you are gangbusters to get the low end of VHF Hi at 40 miles, that will be the factor that determines your antenna system more than anything else, with you being 4 to 11 miles from most of your locals.

Disregarding Channel 8 Fox. You would be looking for a competent omnidirectional indoor antenna, with some VHF Hi performance because you have channel 11.....like the Winegard SS-3000 with its reflector removed, or the Philips MANT940. Perhaps the Philips MANT510, though it has some directionality, it has Rabbit Ear dipoles for solid VHF performance. Maybe one of the long antennas, the trio, Philips MANT950, RCA ANT806, Terk TV-55, which all have superior VHF performance compared to indoor uhf antennas without Rabbit Ears.

If you are gunning for Fox 8 in another market, you may want to get a combo UHF/VHF outdoor antenna, like the Winegard HD-1080 or the Channel Master 2016....which are reasonably small. Or you could get a classic UHF/VHF medium distance combo...or one of the new VHF Hi + UHF combos from Winegard. You could possibly(quite probably) pull it in with an indoor antenna at the appropriate window, but that would require trial and error testing by you....the guide on the front page can help you make informed decisions about the direction of your trial and error testnig.

Also, look for sweet spots. Youd be surprised how much the signal can vary from one cubic foot to the next. Ive heard that brick is really bad as well.


EDIT: Maybe look into trying out the legendary Winegard 7210P "Ghost Killer."

Thanks for the advice. I'll definately check out some of these antennas.
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post #566 of 3332 Old 07-12-2008, 08:42 PM
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What are the best sources for buying the DB-2 or its Eagle Aspen clone? Sounds like these might remain the best choices for indoor reception for the immediate future, until such time as Smart Antennas come on the market - and assuming that those units actually perform as advertised.

I do not know about the local policy about providing links to, or even mentioning, commercial sites that are not site sponsors, so this post may be out of line. We purchased our Eagle Aspen from (or more properly, through) buy.com, and it cost us about half the price (shipping included) of the TerrestrialDigital DB2 as priced on the AntennasDirect website.

As mentioned in another post, the Eagle Aspen is not identical to the DB2, though it is very close. The bow-tie elements of the Eagle Aspen are just a smidge longer than those on the DB2, and the connection to the coaxial cable is done slightly differently. Wherever the DB2 is made, the Eagle Aspen we purchased was made in mainland China.
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post #567 of 3332 Old 07-12-2008, 10:29 PM
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Originally Posted by EscapeVelocity View Post

Seatac, your big city high signal strength multi-path and interference problems are probably something to consider with regards to signal meters and tuners ability to post and image as well.

Excellent points. I live in a suburban location, the local ATSC transmitters are in five different directions at distances from 11 to 23 miles from here.

Quote:
Originally Posted by EscapeVelocity View Post

Also, look for sweet spots. You'd be surprised how much the signal can vary from one cubic foot to the next. Ive heard that brick is really bad as well.

This is equally important. That is part of why my experience with using a Channel Master 4221 indoors was so frustrating - overall, it brought the absolute highest signal levels, but frequently needed to be moved for different stations (not easy to keep moving around when placed indoors in a living area). My condo is a ground floor unit, which further makes it hard to get a strong signal. I think a good rule of thumb for OTA DTV is that ground-floor units in areas with multi-story buildings are going to have serious problems getting reliable reception. A lot of what passes for "signal" is the byproduct of single-edge or double-edge diffraction off of nearby buildings, hills, or other structures.

If my neighbors and I install a rooftop antenna, we might look at a Winegard HD7210P Ghost Killer. Time will tell if any of the upcoming Smart Antenna offerings will yield better results.
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post #568 of 3332 Old 07-13-2008, 12:01 PM - Thread Starter
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Yeah, that is what I was trying to say....that the noise floor is higher where you are, and so this noise and multi-path not only is shown in the signal meter, but the tuner needs more signal to noise to create an image. Where as all I need is a whisper of a signal out here in the boondocks and the tuner can pluck an image from it.

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post #569 of 3332 Old 07-13-2008, 12:21 PM - Thread Starter
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Radio Shack 15-624 Double Bow Tie



This one is an excellent performer on UHF. Its a bit bigger than I imagined. As you can see the bows are a bit damaged....they seem to be somewhat fragile not brittle but bendable, however it still performs great with the bent bows.

I mentioned its quick performance check earlier. Here is the blurb...

Quote:


I hooked up the RS Double Bow to the Vizio and set it on the not so hot spot, Oppo, and it picked up everything except my weakest station. With heavy breakups on my 2nd weakest. Excellent.

Here it is next to the DB2 for comparison.



I read somewhere, that you could improve performance by cutting off the twin lead wire and directly attaching a 75ohm matching transformer balun to the feed lines(where the twin lead attached to the antenna).

EDIT: Here it is, tigerbangs at the High Def forum.....Radio Shack 15-624 indoor UHF antenna

PS - Sorry about the shameless self promotion. [embarassed]

EDIT 2: I also heard you could make the bows bigger with aluminum foil to increase performance.

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post #570 of 3332 Old 07-13-2008, 01:10 PM
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EV, I saw on the first page or so of this thread you gave a big thumbs up to the old-school Radio shack bowtie antenna like the kind that you would clip onto a dipole.

I've seen other threads on this forum talking about making your own antenna and so I was wondering if a couple of those RS bowties could be daisy chained (just connecting their wires together directly) and backed with an aluminum foil covered board reflector to form a homemade high power antenna? Would connecting/twisting their wires together work or would something more have to be done?

I would probably start off small with just 2 to mimick the two bay ones but if it did ok I might go bigger. I just dont wanna go buying all this stuff if it has little chance of working...especially when I could shell out a little more cash and get one that's professionally designed.

Since there's wire mesh behind my walls (plaster)...i wonder if i could just tack up some of those bowties on my wall (assuming the wall is facing the right direction) and have the wall itself work like a reflector?
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