JPS6247015B2 - - Google Patents
Info
- Publication number
- JPS6247015B2 JPS6247015B2 JP57056225A JP5622582A JPS6247015B2 JP S6247015 B2 JPS6247015 B2 JP S6247015B2 JP 57056225 A JP57056225 A JP 57056225A JP 5622582 A JP5622582 A JP 5622582A JP S6247015 B2 JPS6247015 B2 JP S6247015B2
- Authority
- JP
- Japan
- Prior art keywords
- output
- bfo
- frequency
- beat
- transmitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 description 18
- 230000035559 beat frequency Effects 0.000 description 7
- 229910002953 BFO5 Inorganic materials 0.000 description 4
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Description
【発明の詳細な説明】
本発明は、SSB式トランシーバのCW用モニタ
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a CW monitor device for an SSB type transceiver.
従来、SSB式トランシーバではローカル発振器
を送受信で共用すると共に、受信用BFOも送信
用キヤリア発信器として共用し、送受信の周波数
を一致させている。 Conventionally, in SSB type transceivers, a local oscillator is shared for transmitting and receiving, and a receiving BFO is also used as a transmitting carrier oscillator to match the transmitting and receiving frequencies.
CWの受信では、AF出力周波数が600〜800Hz
のビート受信であるから、SSB式トランシーバを
CW用トランシーバに流用するために、ローカル
発振器を送受信で共用した場合には、受信用
BFOと送信用キヤリア発振器は共用できない。
BFO発振周波数と600〜800Hzずれた発振周波数
で送受信周波数が一致する方向にずれた発振周波
数を有する送信用キヤリア発振器を設け、かつ送
信時にモニタ機能を付与するため発振周波数が
600〜800Hzのモニタ用の発振器を設けて、送信時
のキーイングに同期させて該モニタ用発振器を作
動せしめ、その出力を受信部のAF回路の入力に
加えてモニタ機能を果している。受信用BFOと
送信用キヤリア周波数の差は、モニタ用発振器の
発振周波数と一致するように固定されているのが
普通である。 For CW reception, the AF output frequency is 600-800Hz
Since it is a beat reception, an SSB type transceiver is used.
If the local oscillator is used for transmitting and receiving in order to be used as a CW transceiver,
BFO and transmitting carrier oscillator cannot be shared.
A transmitting carrier oscillator is provided with an oscillation frequency that is 600 to 800 Hz different from the BFO oscillation frequency, and the oscillation frequency is shifted in the direction that the transmitting and receiving frequencies match.
A 600 to 800 Hz monitor oscillator is provided, the monitor oscillator is activated in synchronization with keying during transmission, and its output is added to the input of the AF circuit of the receiver to perform the monitor function. The difference between the receiving BFO and the transmitting carrier frequency is usually fixed to match the oscillation frequency of the monitoring oscillator.
受信ビート周波数は操作者の好みのピツチがあ
るので、BFOの発振周波数を可変として好みに
合わせて調節できることが望ましいが、上記の方
法ではBFOの発振周波数を可変とした場合、モ
ニタ用発振器の周波数と受信ビート周波数とが一
致しなくなる欠陥が生ずる。 Since the received beat frequency has a pitch that the operator prefers, it is desirable to be able to make the oscillation frequency of the BFO variable and adjust it to suit the user's preference. However, with the above method, if the oscillation frequency of the BFO is made variable, A defect occurs in which the received beat frequency and the received beat frequency do not match.
本発明は、かかる点に鑑みて行なわれたもの
で、BFOの発振周波数を変化させて受信ビート
周波数を可変するに伴つて、モニタ信号周波数も
等方向等量変化し、受信ビート周波数とモニタ信
号周波数とを一致させたSSB式トランシーバの
CW用モニタ装置を提供することを目的としたも
のである。 The present invention has been made in view of this point, and as the received beat frequency is varied by changing the oscillation frequency of the BFO, the monitor signal frequency also changes in the same direction and by the same amount, so that the received beat frequency and the monitor signal SSB type transceiver that matches the frequency
The purpose is to provide a CW monitor device.
以下本発明の一実施例を図面について詳細に説
明する。 An embodiment of the present invention will be described in detail below with reference to the drawings.
図において、アンテナ（図示せず）よりの受信
RF信号がミクサ１に供給されるが、ローカル発
振器２からの出力もミクサ１に供給されて、混合
の後にIF信号として中間周波波器３を経てビ
ート検波器４へ送出される。 In the figure, reception from an antenna (not shown)
The RF signal is supplied to the mixer 1, and the output from the local oscillator 2 is also supplied to the mixer 1, and after mixing, is sent to the beat detector 4 via the intermediate frequency generator 3 as an IF signal.
BFO５の出力もビート検波器４に加えられ、
ビート検波器４でビート検波されその検波出力は
低周波増幅器６で増幅されて、スピーカやヘツド
ホーン等を駆動させる。 The output of BFO5 is also added to beat detector 4,
Beat detection is performed by a beat detector 4, and the detected output is amplified by a low frequency amplifier 6 to drive a speaker, headphone, etc.
１方送信キヤリア発振器７の出力は、電鍵等の
操作によつて出力を断続するキーイング回路８に
供給され、キーイング回路８の出力はミクサ９に
与えられる。 The output of the one-way transmission carrier oscillator 7 is supplied to a keying circuit 8 whose output is intermittent by operating an electric key or the like, and the output of the keying circuit 8 is supplied to a mixer 9.
また、前記ローカル発振器２の出力もミクサ９
に加えられ、ミクサ９の出力は送信用の電力増幅
器（図示せず）を経てアンテナから送信される。 Further, the output of the local oscillator 2 is also output to the mixer 9.
The output of the mixer 9 is transmitted from the antenna via a transmission power amplifier (not shown).
また、キーイング回路８の出力はビート検波器
１０へ供給されると共に、BFO５の出力もビー
ト検波器１０へ供給され、ビート検波器１０の出
力は低周波増幅器６の入力側へ送出される。 Further, the output of the keying circuit 8 is supplied to the beat detector 10, the output of the BFO 5 is also supplied to the beat detector 10, and the output of the beat detector 10 is sent to the input side of the low frequency amplifier 6.
ちなみに、従来のSSB式トランシーバにおいて
は、ビート検波器１０は使用していないでモニタ
用トーン発振器が受信部の低周波回路に直接接続
されていたため、BFO５の発振周波数を変化し
て受信ビート周波数を変えようとした場合、モニ
タ用トーン発振器の発振周波数とBFO５の発振
周波数とは相関関係がないため、送信周波数と受
信周波数が異なつてしまつた。 By the way, in conventional SSB type transceivers, the beat detector 10 was not used and the monitor tone oscillator was directly connected to the low frequency circuit of the receiving section, so the oscillation frequency of BFO 5 was changed to adjust the received beat frequency. When I tried to change it, there was no correlation between the oscillation frequency of the monitor tone oscillator and the oscillation frequency of BFO5, so the transmission frequency and reception frequency became different.
本発明において、 ローカル発振器２の発振周波数……LO BFO５の発振周波数……BFO 送信キヤリア発振器７の発振周波数……car ビート検波出力……AF とする。 In the present invention, the oscillation frequency of the local oscillator 2... The oscillation frequency of the LO BFO 5... The oscillation frequency of the BFO transmission carrier oscillator 7... The car beat detection output... AF .
ヘテロダイン方式を仮に下側（一側）とする。 Let us assume that the heterodyne system is on the lower side (one side).
注 上側（＋側）又は下側（−側）を使用する
ことは任意であるが、送信と受信の周波数が
同じであることが条件である。 Note: Using the upper side (+ side) or the lower side (- side) is optional, but the condition is that the transmit and receive frequencies are the same.
今、受信周波数……RX
送信周波数……TX
とすると、
（RX−LO）−BFO＝AF ……１式car
＋LO＝TX ……２式
１式と２式から受信周波数RXと送信周波数
TXを求める。RX
＝AF＋BFO＋LO ……３式TX
＝car＋LO ……４式
送信周波数と受信周波数とが１致すると、３式
と４式から次の式が成立する。RX
＝TX＝AF＋BFO＋LO
＝car＋LO AF＋BFO＝car ……５式
５式よりビート検波出力AFを求める。 Now, if receiving frequency... RX transmitting frequency... TX , ( RX - LO ) - BFO = AF ...1 formula car + LO = TX ...2 formula From formulas 1 and 2, receive frequency RX and transmit frequency
Ask for TX . RX = AF + BFO + LO ...Equation 3 TX = car + LO ...Equation 4 When the transmission frequency and reception frequency match, the following equation is established from Equations 3 and 4. RX = TX = AF + BFO + LO = car + LO AF + BFO = car ...Equation 5 Find the beat detection output AF from Equation 5.
AF＝car−BFO ……６式
６式よりBFO５の発振周波数BFOとビート検
波出力AFとは、互に相関関係にあることが判
る。 AF = car - BFO ...Equation 6 From Equation 6, it can be seen that the oscillation frequency BFO of BFO5 and the beat detection output AF are correlated with each other.
ビート検波器１０は、送信キヤリア発振器７の
発振周波数carとBFO５の発振周波数BFOとで
ビート検波するように構成されており、その出力
としてビート検波出力AFが得られる。 The beat detector 10 is configured to perform beat detection using the oscillation frequency car of the transmission carrier oscillator 7 and the oscillation frequency BFO of the BFO 5, and obtains a beat detection output AF as its output.
すなわち、ビート検波出力AFをモニタ信号と
すれば、このモニタ信号AFと同様のピツチで相
手局を受信し、その状態で送信すればBFO５の
発振周波数BFOを可変しても、送受信の周波数
は一致していることを示している。 In other words, if the beat detection output AF is used as a monitor signal, if the other station is received at the same pitch as this monitor signal AF and transmitted in that state, even if the oscillation frequency BFO of BFO5 is varied, the transmitting and receiving frequencies will remain the same. This shows that the
以上に詳述したように、BFOの発振周波数を
変化させて受信ビート周波数を可変すれば、モニ
タ信号周波数も等方向等量変化し、受信ビート周
波数とモニタ信号周波数とを一致させたSSB式ト
ランシーバのCW用モニタ装置を提供することが
出来る。 As detailed above, if the received beat frequency is varied by changing the oscillation frequency of the BFO, the monitor signal frequency will also change in the same direction and by the same amount. CW monitor device can be provided.
図は本発明の一実施例を示すブロツク図であ
る。
１，９……ミクサ、２……ローカル発振器、３
……中間周波増幅器、４……ビート検波器、５…
…BFO、６……低周波増幅器、７……送信キヤ
リア発振器、８……キーイング回路。
The figure is a block diagram showing one embodiment of the present invention. 1, 9...mixer, 2...local oscillator, 3
...Intermediate frequency amplifier, 4...Beat detector, 5...
...BFO, 6...Low frequency amplifier, 7...Transmission carrier oscillator, 8...Keying circuit.
Claims (1)
合する受信用ミクサとその出力のIF信号をビー
ト検波するBFOおよびビート検波器を有する受
信部と、前記のローカル発振器の出力と送信用キ
ヤリア発振器の出力とを混合する送信用ミクサと
送信用キヤリア発振器およびその出力をキーイン
グするキーイング回路を有する送信部とよりなる
CW用のトランシーバにおいて、キーイングされ
た送信キヤリアを受信用BFOでビート検波する
CWモニタ用の検波器を設け、その検波出力を受
信用低周波回路へ供給して、CWのモニタ機能を
得ることを特徴とするSSB式トランシーバのCW
用モニタ装置。1. A reception mixer that mixes the reception input signal and the output of the local oscillator, a reception unit that includes a BFO and a beat detector that beat-detects the IF signal output from the reception mixer, and the output of the local oscillator and the output of the transmission carrier oscillator. and a transmitting section having a transmitting mixer for mixing the transmitting signal, a transmitting carrier oscillator, and a keying circuit for keying its output.
In a CW transceiver, beat detection is performed on the keyed transmitting carrier using the receiving BFO.
A CW SSB type transceiver characterized by providing a CW monitoring detector and supplying the detected output to a receiving low frequency circuit to obtain a CW monitoring function.
monitor device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57056225A JPS58173928A (en) | 1982-04-05 | 1982-04-05 | Cw monitoring device of ssb transceiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57056225A JPS58173928A (en) | 1982-04-05 | 1982-04-05 | Cw monitoring device of ssb transceiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58173928A JPS58173928A (en) | 1983-10-12 |
| JPS6247015B2 true JPS6247015B2 (en) | 1987-10-06 |
Family
ID=13021156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57056225A Granted JPS58173928A (en) | 1982-04-05 | 1982-04-05 | Cw monitoring device of ssb transceiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58173928A (en) |
-
1982
- 1982-04-05 JP JP57056225A patent/JPS58173928A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58173928A (en) | 1983-10-12 |
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